You are here:
  1. Home
  2. Granite & Marble Water Features
  3. Rustic Black Limestone 30cm Sphere
SKU: 4011 – 30

Rustic Black Limestone 30cm Sphere

£430.00

Rustic Black Limestone Sphere – 30cm

Chiselled & Polished Garden Water Feature

Our Rustic Black Limestone Sphere (30cm) is a striking new addition to our water feature collection. Beautifully hand carved from natural limestone, this elegant sphere combines rustic texture with polished sophistication to create a stunning focal point in any garden.

Available in 30cm, 45cm and 60cm diameters, this versatile feature suits everything from compact patios to larger landscaped gardens.

Unique Spiral Chiselled Design

The spiral chiselled detailing gives the sphere a natural, organic feel, while the highly polished sections add a refined contrast. This blend of rustic and smooth finishes enhances the movement of water as it gently trickles down the curved surface.

The flowing water creates a peaceful, calming sound — perfect for relaxing in your garden during long summer evenings.

Each sphere is carved from natural black limestone, meaning colour tones and subtle veining will vary slightly, making every piece completely unique.

Complete Water Feature Kit Included

Simple Plug & Play Installation

This feature comes complete with everything required to get it running quickly and safely.

Reservoir Specifications

  • Size: 52cm Diameter x 34cm Height

  • Water Capacity: 90 Litres

  • Material: Heavy-duty frost-resistant plastic

  • Suitable for year-round outdoor use

Steel Grid Specifications

  • Diameter: 55cm

  • Height: 2.5cm

  • Weight: 6kg

  • Load Capacity: Up to 250kg (with support)

  • Galvanised heavy-duty steel construction

The strong steel grid safely supports the sphere while allowing water to drain back into the reservoir efficiently.

ECO Water Feature Kit Includes

  • 1000 L/H Pump

  • LED Light

  • 1 Metre Pipe (3/4 Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Mains Plug)

The low-voltage 12V system ensures safe, easy DIY installation without the need for an electrician.

Product Specifications

Name Size Weight Colour Material
Rustic Black Limestone Sphere 30cm Diameter Approx. 35kg Black Natural Limestone

Why Choose This Water Feature?

✔ Rustic spiral chiselled detailing
✔ Highly polished accents for added elegance
✔ Relaxing cascading water sound
✔ Wildlife-friendly water source
✔ Suitable for modern and traditional gardens
✔ Complete installation kit included

Important Delivery Information

Delivery is made via pallet network. You will be contacted prior to delivery to arrange a convenient weekday (Monday–Friday) delivery date. Delivery is kerbside only and requires solid, level ground access.

 

You may also like

Pole Spiral
Choose Feature Light Colour

Pole Spiral

£937.00
Natural grey granite pole feature. Highly polished to allow the water to fun freely down the feature. The stainless steel spiral twisting around the granite gives it a modern twist. The water feature is stunning and will be a statement to your garden! you wont find anything else like it! This water feature will create a beautiful sound of trickling and running water, creating a tranquil sound to sit and relax to in the long summer evenings. As well as providing a water source and a much needed drink to all kinds of nature, like wild birds, bees and even hedgehogs have been seen  quenching there thirst. THE ABOVE ITEM COMES COMPLETE WITH 70CM RESERVOIR AND HEAVY WEIGHT GALVANISED STEEL GRID, 1200L PUMP, LED LIGHT AND 3/4 INCH PIPE. PLEASE CHOOSE LIGHT COLOUR IN THE BOX ABOVE.  
Name Size Weight Colour Material
pole spiral- grey Granite Twist 20 x 100cm h 180kgs grey Natural Granite
For extra bags of pebbles go to category ‘accessories’   IMPORTANT INFORMATION ABOUT DELIVERY OF YOUR NEW WATER FEATURE DELIVERY OF THE WATER FEATURE IS MADE BY A PALLET NETWORK WHO WILL CALL BEFORE DELIVERY TO FIND A DAY MOST CONVENIENT FOR YOU. DELIVERIES ARE MADE MONDAY – FRIDAY AND CAN ONLY BE TO THE NEAREST CURB SIDE. ON MOST OCCASSIONS THE DRIVER WILL TEND TO TAKE THE PALLET AS FAR AS HE CAN BUT THIS HAS TO BE ON SOLID LEVEL GROUND.
Sale!
Cascading Pebble Light Grey Granite
Choose Feature Light Colour

Cascading Pebble Light Grey Granite

Original price was: £580.00.Current price is: £490.00.

Made of natural light grey granite, this sleek cascading pebble Water Feature is a stunning addition to any garden. The gently rippling water emphasizes the natural beauty of the stone and creates a soothing sound. Rustic edge with polished top. This feature is very easy to install and maintain.

Name Size Weight Colour Material
Cascading Pebble approx 35cm L x approx 25cm W x 20cm H 20kgs Light Grey Natural Granite
       
Babbling Bowl Grey Granite 60cm
Choose Feature Light Colour

Babbling Bowl Grey Granite 60cm

£630.00
 

Large Grey Granite Babbling Bowl – 60cm

Elegant Natural Stone Garden Water Feature

Made from solid natural grey granite, this stunning 60cm Babbling Bowl Water Feature is a true statement piece for any garden or patio.

The gently rippling water flows from the polished centre and softly cascades over the rustic chiselled edge, enhancing the natural beauty of the granite while creating a soothing, tranquil sound. The contrast between the rough outer edge and the smooth polished bowl gives this feature a timeless look that suits both modern and traditional gardens.

Easy to install and simple to maintain, this granite bowl is designed for long-lasting outdoor enjoyment.

Why Choose This Granite Babbling Bowl?

✔ Large 60cm diameter statement feature
✔ Hand carved from solid natural granite
✔ Rustic outer edge with polished top and bowl
✔ Beautiful cascading water movement
✔ Calming sound for a relaxing garden atmosphere
✔ Durable, frost-resistant and low maintenance

Natural Stone – Completely Unique

Each bowl is carved from natural granite, meaning:

  • Colour tones and grain patterns vary slightly

  • Every piece is unique

  • Extremely strong and weather resistant

  • Built to last for years outdoors

Product Specifications

Name Size Weight Colour Material
Babbling Bowl 60cm Diameter x 15cm High 40kg Grey Natural Granite

Complete Water Feature Kit Included

This water feature comes as a complete plug-and-play system ready for installation.

Reservoir Specifications

  • Size: 67cm Diameter x 34cm Height

  • Water Capacity: 90 Litres

  • Material: Heavy-duty frost-resistant plastic

Designed for year-round outdoor use and consistent water circulation.

Steel Grid Specifications

  • Diameter: 70cm

  • Height: 2.5cm

  • Weight: 8kg

  • Load Capacity: Up to 250kg (with support)

  • Material: Heavy-duty galvanised steel

Provides strong structural support while allowing water to drain efficiently back into the reservoir.

ECO Water Feature Kit Specifications

Complete Plug & Play System – No Electrician Required

This low-voltage 12V system allows for safe and simple installation without hiring an electrician.

The Kit Includes:

  • 1000 L/H Pump

  • LED Light

  • 1 Metre Pipe (3/4 Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Mains Plug)

The LED light enhances the flowing water beautifully at night, highlighting the natural granite texture.

Important Delivery Information

Delivery is made via a pallet network. You will be contacted prior to delivery to arrange a convenient weekday (Monday–Friday).

Delivery is to the nearest curbside only. The driver will move the pallet as far as possible, but this must be on solid, level ground.

Granite sphere grey - flamed surface 35cm
Choose Feature Light Colour

Granite sphere grey - flamed surface 35cm

£488.00
 

Grey Granite Sphere Water Feature – 35cm (Flamed Finish)

Add texture, movement and natural beauty to your garden with our 35cm Grey Granite Sphere Water Feature with Flamed Finish.

Expertly hand carved from natural granite, this sphere features a flamed surface texture, giving it a beautifully rough, tactile finish. This treatment allows the water to gently trickle down the exterior, enhancing both the visual movement and the soothing sound of flowing water.

The natural grains and tonal variations within the grey granite make each piece completely unique — no two spheres are ever identical.

At the top of the sphere, a 5cm x 5cm dished hole allows water to bubble up before cascading down the sides. This creates a relaxing “babbling” sound, perfect for adding tranquillity to patios, lawns, or landscaped gardens.

Product Details

Name Size Weight Colour Material
Grey Granite Sphere (Flamed) 35cm Diameter Approx. 35–45kgs Natural Grey Natural Granite

Please note: As this is natural stone, colour tones and grain patterns will vary.

Complete Water Feature Kit Included

This water feature comes supplied with a full installation kit, making setup simple and straightforward.

Reservoir Specifications

  • Size: 52cm Diameter x 34cm Height

  • Material: Heavy-duty frost-resistant plastic

Designed for year-round outdoor use, the reservoir ensures consistent water flow and durability in all weather conditions.

Steel Grid Specifications

  • Diameter: 55cm

  • Height: 2.5cm

  • Load Capacity: Up to 250kg (with support)

  • Material: Galvanised heavy-duty steel

The galvanised steel grid safely supports the granite sphere while allowing efficient drainage back into the reservoir.

ECO Water Feature Kit – Plug & Play System

No electrician required.

Our popular low-voltage ECO kit includes everything needed to operate your fountain safely and efficiently.

The Kit Includes:

  • 1000 L/H Pump

  • LED Light (choose your preferred light colour)

  • 1 Metre Pipe (½ Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Standard Mains Plug)

The low-voltage system ensures safe operation while providing reliable water circulation and attractive evening illumination.

Granite sphere Pinky - flamed surface 35cm
Choose Feature Light Colour
Out Of Stock

Granite sphere Pinky - flamed surface 35cm

£488.00

Pinky Granite Sphere Water Feature – 35cm (Flamed Finish)

Add texture, movement and natural beauty to your garden with our 35cm Pinky Granite Sphere Water Feature with Flamed Finish.

Expertly hand carved from natural granite, this sphere features a flamed surface texture, giving it a beautifully rough, tactile finish. This treatment allows the water to gently trickle down the exterior, enhancing both the visual movement and the soothing sound of flowing water.

The natural grains and tonal variations within the grey granite make each piece completely unique — no two spheres are ever identical.

At the top of the sphere, a 5cm x 5cm dished hole allows water to bubble up before cascading down the sides. This creates a relaxing “babbling” sound, perfect for adding tranquillity to patios, lawns, or landscaped gardens.

Product Details

Name Size Weight Colour Material
Pinky Granite Sphere (Flamed) 35cm Diameter Approx. 35–45kgs Pinky Natural Granite

Please note: As this is natural stone, colour tones and grain patterns will vary.

Complete Water Feature Kit Included

This water feature comes supplied with a full installation kit, making setup simple and straightforward.

Reservoir Specifications

  • Size: 52cm Diameter x 34cm Height

  • Material: Heavy-duty frost-resistant plastic

Designed for year-round outdoor use, the reservoir ensures consistent water flow and durability in all weather conditions.

Steel Grid Specifications

  • Diameter: 55cm

  • Height: 2.5cm

  • Load Capacity: Up to 250kg (with support)

  • Material: Galvanised heavy-duty steel

The galvanised steel grid safely supports the granite sphere while allowing efficient drainage back into the reservoir.

ECO Water Feature Kit – Plug & Play System

No electrician required.

Our popular low-voltage ECO kit includes everything needed to operate your fountain safely and efficiently.

The Kit Includes:

  • 1000 L/H Pump

  • LED Light (choose your preferred light colour)

  • 1 Metre Pipe (½ Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Standard Mains Plug)

The low-voltage system ensures safe operation while providing reliable water circulation and attractive evening illumination.

Rustic sphere - Pinky granite
Choose Feature Light Colour

Rustic sphere - Pinky granite

£547.00
This hand carved chiseled sphere adds a natural but stylish feature to the garden. As the water cascades down its un-even surface it produces a realxing 'trickling' sound of water.   THE ABOVE ITEM COMES COMPLETE WITH 70CM RESERVOIR AND HEAVY WEIGHT GALVANISED STEEL GRID, 1200L PUMP, 2 x LED LIGHT AND 3/4 INCH PIPE WITH SPLITTER. PLEASE CHOOSE LIGHT COLOUR IN THE BOX ABOVE.  
Name Size Weight Colour Material
Rustic Sphere Dia 40cm 50kgs Pinky Natural Granite
  For extra bags of pebbles go to category 'accessories' IMPORTANT INFORMATION ABOUT DELIVERY OF YOUR NEW WATER FEATURE DELIVERY OF THE WATER FEATURE IS MADE BY A PALLET NETWORK WHO WILL CALL BEFORE DELIVERY TO FIND A DAY MOST CONVENIENT FOR YOU. DELIVERIES ARE MADE MONDAY - FRIDAY AND CAN ONLY BE TO THE NEAREST CURB SIDE. ON MOST OCCASSIONS THE DRIVER WILL TEND TO TAKE THE PALLET AS FAR AS HE CAN BUT THIS HAS TO BE ON SOLID LEVEL GROUND.          
Sale!
Babbling natural boulder
Choose Feature Light Colour

Babbling natural boulder

Original price was: £529.00.Current price is: £480.00.

Babbling Natural Granite Boulder Water Feature

Create a truly natural focal point in your garden with our Babbling Natural Granite Boulder Water Feature. Hand-selected and crafted from solid natural granite, each boulder is completely unique — no two stones are ever the same.

As water gently bubbles from the top and cascades over the natural contours of the stone, it enhances the rich colours and intricate patterns within the granite. The soothing sound of babbling water creates a peaceful and relaxing atmosphere, perfect for patios, landscaped gardens, wildlife areas or contemporary outdoor spaces.

Because every boulder is formed naturally, sizes, shapes and grain patterns will vary — ensuring you own a one-of-a-kind garden feature.

This water feature not only adds visual impact but also provides a refreshing water source for garden wildlife including birds, bees and even hedgehogs.

Product Details

Name Size Weight Colour Material
Babbling Natural Boulder 35–45cm Length x 20–30cm Height Approx. 30–40kg Black / Grey Natural Granite

Please note: As this is natural stone, dimensions, colour tones and markings will vary.

Complete Water Feature Kit Included

Supplied as a full kit for straightforward installation.

Reservoir Specifications

  • Size: 67cm Diameter x 34cm Height

  • Water Capacity: 90 Litres

  • Material: Heavy-duty frost-resistant plastic

Designed for year-round outdoor use, the reservoir ensures reliable water circulation in all weather conditions.

Steel Grid Specifications

  • Diameter: 70cm

  • Height: 2.5cm

  • Weight: 8kg

  • Load Capacity: Up to 250kg (with support)

  • Material: Galvanised heavy-duty steel

The galvanised steel grid securely supports the granite boulder while allowing water to drain efficiently back into the reservoir.

ECO Water Feature Kit – Plug & Play System

Simple, safe DIY installation — no electrician required.

The ECO Kit Includes:

  • 1000 L/H Pump

  • LED Light (choose your preferred colour)

  • 1 Metre Pipe (3/4 Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Standard Mains Plug)

The low-voltage system ensures safe operation while delivering reliable water flow and beautiful evening illumination.

Twisted Fountain 80cm Grey Granite
Choose Feature Light Colour

Twisted Fountain 80cm Grey Granite

£584.00

Twisted Fountain – 80cm Grey Granite

Make a bold impact in your garden with our Twisted Fountain in Grey Granite – 80cm. This striking, hand-carved water feature is a true statement piece, designed to bring movement, texture and the soothing sound of cascading water to any outdoor space.

Chiselled on all four sides, this twisted granite column creates a beautifully natural and rustic appearance. As water flows from the polished dished top, it cascades down the textured faces, enhancing the stone’s character while producing a calming, tranquil sound.

Whether positioned in a contemporary courtyard, traditional garden, patio setting or landscaped flower bed, this 80cm granite fountain instantly draws the eye and becomes a stunning focal point.

Product Details

Name Size Weight Colour Material
Twisted Fountain 25 x 25 x 80cm High Approx. 110kg Grey Natural Granite

Please note: As this is natural stone, colour tones, grain and texture will vary slightly. Every piece is completely unique.

Complete Water Feature Kit Included

This feature comes with a full installation kit for simple, safe and straightforward setup.

Reservoir Specifications

  • Size: 67cm Diameter x 34cm Height

  • Water Capacity: 90 Litres

  • Material: Heavy-duty frost-resistant plastic

Designed for year-round outdoor use, the reservoir ensures consistent water flow and durability in all weather conditions.

Steel Grid Specifications

  • Diameter: 70cm

  • Height: 2.5cm

  • Weight: 8kg

  • Load Capacity: Up to 250kg (with support)

  • Material: Galvanised heavy-duty steel

The strong galvanised grid securely supports the granite column while allowing water to drain efficiently back into the reservoir.

ECO Water Feature Kit – Plug & Play System

No electrician required.

Our popular low-voltage ECO Water Feature Kit makes installation simple and safe.

The Kit Includes:

  • 1000 L/H Pump

  • LED Light (choose your preferred colour)

  • 1 Metre Pipe (3/4 Inch Diameter)

  • Pump to Pipe Connector

  • 12V Transformer (Standard Mains Plug)

The low-voltage system ensures safe operation while delivering reliable water circulation and beautiful illumination in the evening.

The 80cm Grey Granite Twisted Fountain creates a peaceful ambience with its gently cascading water, making it perfect for long summer evenings, entertaining guests, or simply enjoying a quiet moment in your garden.

Sale!
Old millstone
Choose Feature Light Colour

Old millstone

Original price was: £510.00.Current price is: £490.00.
 

Genuine Antique Old Millstone Water Feature – Natural Granite

Bring timeless character and heritage charm to your garden with our Genuine Antique Old Millstone Water Feature. Crafted from solid natural granite, each millstone is completely unique, showcasing authentic weathering, natural textures, and subtle colour variations developed over decades.

Stone and water are essential elements in both traditional and contemporary garden design. The gentle cascade of water over the antique granite surface creates a calming, tranquil atmosphere — perfect for relaxing in the garden on long summer evenings. When combined with soft LED lighting at night, the effect becomes truly magical.

Because these are genuine reclaimed millstones, sizes and colours vary slightly, making every piece one of a kind.

Optional Granite Plinths Available

Grey granite plinths can be added to elevate the millstone, increasing the water drop for enhanced visual impact and a stronger dripping water sound.

Plinths are available separately in our Accessories category (as seen in product photos).

Product Details

Name Size Weight Colour Material
Old Mill Stone Diameter 50–55cm Height 8–15cm 30–40kg Natural Stone Tones Natural Granite

Please note: Each millstone is unique and will vary slightly in colour and texture.

Complete Water Feature Kit Included

This product comes complete with everything required for installation.

Reservoir Specifications

  • Diameter: 67cm

  • Height: 34cm

  • Material: Heavy-duty frost-resistant plastic

  • Designed for reliable, year-round outdoor use

Steel Grid Specifications

  • Diameter: 70cm

  • Material: Heavy-weight galvanised steel

  • Strong structural support for the millstone

  • Designed to safely distribute weight and allow efficient drainage

Water Feature Kit Includes

  • 1200 L/H Pump

  • LED Light (choose colour option above)

  • 3/4 Inch Pipe

  • All necessary connectors

The powerful pump ensures consistent water flow, while the LED light enhances the natural texture of the granite after dark.

For additional decorative touches, extra bags of pebbles are available in our Accessories category.

Important Delivery Information

Delivery is made via pallet network. The courier will contact you to arrange a convenient weekday delivery (Monday–Friday).

Delivery is to the nearest kerbside only. Drivers will move the pallet as far as possible, but this must be on solid, level ground.

 
Rustic sphere - pinky granite - large
Choose Feature Light Colour
Out Of Stock

Rustic sphere - pinky granite - large

£650.00
This feature is also avaliable in 40cm THE ABOVE ITEM COMES COMPLETE WITH 70CM RESERVOIR AND HEAVY WEIGHT GALVANISED STEEL GRID, 1200L PUMP, 2 x LED LIGHT AND 3/4 INCH PIPE WITH SPLITTER. PLEASE CHOOSE LIGHT COLOUR IN THE BOX ABOVE.  
Name Size Weight Colour Material
Rustic Sphere 50cm 70kgs Pinky Natural Granite
For extra bags of pebbles go to category 'accessories'   IMPORTANT INFORMATION ABOUT DELIVERY OF YOUR NEW WATER FEATURE DELIVERY OF THE WATER FEATURE IS MADE BY A PALLET NETWORK WHO WILL CALL BEFORE DELIVERY TO FIND A DAY MOST CONVENIENT FOR YOU. DELIVERIES ARE MADE MONDAY - FRIDAY AND CAN ONLY BE TO THE NEAREST CURB SIDE. ON MOST OCCASSIONS THE DRIVER WILL TEND TO TAKE THE PALLET AS FAR AS HE CAN BUT THIS HAS TO BE ON SOLID LEVEL GROUND.          
Twisted Fountain Pinky Fountain 60cm
Choose Feature Light Colour

Twisted Fountain Pinky Fountain 60cm

£500.00

Twisted Fountain – Pinky Granite – 60cm

A wonderfully hand-crafted water sculpture, this 60cm Pinky Granite Twisted Fountain adds a contemporary twist to any garden setting. The elegant spiral design creates beautiful water movement as it cascades down the column.

Chiselled, rough-textured edges alternate with highly polished, smooth faces — creating contrast in both appearance and water flow. The polished sections allow water to glide smoothly, while the textured faces enhance the gentle trickling sound, producing a relaxing and tranquil atmosphere in your outdoor space.

The natural pink tones and varied granite grain make every piece completely unique.

Product Details

Name Size Weight Colour Material
Pink Drilled Twist 22cm x 22cm x 60cm High 100kg Pinky Natural Granite

Complete Water Feature Kit Included

THE ABOVE ITEM COMES COMPLETE WITH:

  • Reservoir

  • Heavy Weight Galvanised Steel Grid

  • 1200 L/H Pump

  • LED Light (Please choose light colour in the box above)

  • 3/4 Inch Pipe

Everything you need to install and run your water feature is included.

Reservoir Specifications

  • Diameter: 67cm

  • Height: 34cm

  • Material: Heavy-duty frost-resistant plastic

  • Suitable for year-round outdoor use

Steel Grid Specifications

  • Diameter: 70cm

  • Material: Heavy-duty galvanised steel

  • Designed to safely support the granite column

  • Allows efficient water return into the reservoir

The powerful 1200L/H pump ensures strong and consistent water flow, while the LED light enhances the feature beautifully at night.

For extra bags of pebbles, please visit our Accessories category.

Important Delivery Information

Delivery of your water feature is made by a pallet network who will call before delivery to arrange a convenient weekday (Monday–Friday).

Deliveries are made to the nearest kerbside only. On most occasions the driver will take the pallet as far as possible, but this must be on solid, level ground.

This 60cm Pinky Granite Twisted Fountain is a stylish and eye-catching statement piece — perfect for creating a soothing, contemporary focal point in your garden.

 
Water Feature Cleaner ECO Friendly 500ml

Water Feature Cleaner ECO Friendly 500ml

£29.99

Keep your fountain or pond crystal clear with Water Feature Clear ECO Friendly 500ml – a natural, environmentally responsible solution for treating green water, algae, and blanket weed.

Specially formulated for water features, fountains, barrel features, and small ponds, this eco-friendly treatment works by naturally altering the water chemistry and starving algae of the nutrients it needs to grow. The result is clearer water, reduced maintenance, and a healthier feature environment.

A Natural & Safe Solution

Water Feature Clear is formulated from micro-organisms grown on straw produced under the F.A.A.B (Farm Assured Scheme).

No herbicides or pesticides are introduced during the growing or manufacturing process, making it a safe and environmentally conscious choice.

It is suitable for use in:

  • Stainless steel water features

  • Natural stone features

  • Wooden barrel features

  • Decorative ponds and reservoirs

Benefits of Water Feature Clear:

✔ Controls algae, green water & blanket weed
✔ Helps eliminate stagnant odours
✔ Reduces cleaning frequency
✔ Safe for stainless steel, stone, and wood
✔ Safe for plants, pets, humans & wildlife
✔ Clean, simple and easy to use
✔ Eco-friendly formulation

Dosage Instructions

  • Initial Dose: 30ml for water features up to 20 litres

  • Maintenance Dose: 10ml per week thereafter

  • For larger features or ponds, increase dosage proportionally

Regular use helps maintain clear water and prevents the return of unwanted algae growth.

Ideal For:

  • Garden water features

  • Self-contained fountains

  • Patio barrel features

  • Small decorative ponds

  • Reservoir-based installations

Water Feature Clear 500ml is the perfect low-maintenance, eco-friendly solution to keep your water feature looking fresh, clean, and algae-free all season long.