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Showing 1 - 24 of 74 products
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1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Garden Irrigation1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Garden Irrigation
1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Garden Irrigation
Sale price£1,625.00 Regular price£2,200.00 exc. VAT
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1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Home + Garden1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Home + Garden
1500 Litre Shallow Dig Underground Rainwater Harvesting Tank - Home + Garden
Sale price£1,595.00 Regular price£2,100.00 exc. VAT
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1500 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System1500 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System
1500 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System
Sale price£2,805.00 Regular price£3,840.00 exc. VAT
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1500 Litre GRAF PLATIN Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)1500 Litre GRAF PLATIN Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)
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1500 Litre GRAF PLATIN Direct Underground Rainwater Harvesting System (Home & Garden)1500 Litre GRAF PLATIN Direct Underground Rainwater Harvesting System (Home & Garden)
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Atlantis 1800 Litre Underground Rainwater Harvesting System - Garden IrrigationAtlantis 1800 Litre Underground Rainwater Harvesting System - Garden Irrigation
Atlantis 1800 Litre Underground Rainwater Harvesting System - Garden Irrigation
Sale price£1,340.00 Regular price£2,025.60 exc. VAT
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Atlantis 1800 Litre Underground Rainwater Harvesting System - Home & Garden IrrigationAtlantis 1800 Litre Underground Rainwater Harvesting System - Home & Garden Irrigation
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1950 Litre Underground Water Tank1950 Litre Underground Water Tank Technical Drawing
1950 Litre Underground Rain Water Tank
Sale price£1,045.00 exc. VAT
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1950 Litre Underground Rainwater Harvesting System - Garden Irrigation1950 Litre Underground Rainwater Harvesting System - Garden Irrigation
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1950 Litre Underground Rainwater Harvesting Tank - Home + Garden1950 Litre Underground Rainwater Harvesting Tank - Home + Garden
Enduramaxx 2500 Litre Underground Rain Water Tank
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Atlantis 2600 Litre Underground Rainwater Harvesting System - Garden IrrigationAtlantis 2600 Litre Underground Rainwater Harvesting System - Garden Irrigation
Atlantis 2600 Litre Underground Rainwater Harvesting System - Garden Irrigation
Sale price£1,617.00 Regular price£2,414.40 exc. VAT
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Atlantis 2600 Litre Underground Rainwater Harvesting System - Home & Garden IrrigationAtlantis 2600 Litre Underground Rainwater Harvesting System - Home & Garden Irrigation
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2700 Litre GRAF CARAT Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)2700 Litre GRAF CARAT Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)
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2700 Litre GRAF CARAT Direct Underground Rainwater Harvesting System (Home & Garden)2700 Litre GRAF CARAT Direct Underground Rainwater Harvesting System (Home & Garden)
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2800 Litre Underground Water  Tank2800 Litre Underground Water Tank Lid
2800 Litre Underground Rain Water Tank
Sale price£1,195.00 exc. VAT
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2800 Litre Underground Rainwater Harvesting System - Garden Irrigation2800 Litre Underground Rainwater Harvesting System - Garden Irrigation
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2800 Litre Underground Rainwater Harvesting Tank - Home + Garden2800 Litre Underground Rainwater Harvesting Tank - Home + Garden
FREE Delivery*Save £510.00
3000 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System3000 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System
3000 Litre GRAF PLATIN AA-Silento Underground Rainwater Harvesting System
Sale price£3,125.00 Regular price£4,260.00 exc. VAT
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3000 Litre GRAF PLATIN Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)3000 Litre GRAF PLATIN Garden Comfort Underground Rainwater Harvesting System (Garden Irrigation)
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3000 Litre GRAF PLATIN Direct Underground Rainwater Harvesting System (Home & Garden)3000 Litre GRAF PLATIN Direct Underground Rainwater Harvesting System (Home & Garden)
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Atlantis 3400 Litre Underground Rainwater Harvesting System - Garden IrrigationAtlantis 3400 Litre Underground Rainwater Harvesting System - Garden Irrigation
Atlantis 3400 Litre Underground Rainwater Harvesting System - Garden Irrigation
Sale price£1,891.00 Regular price£2,868.00 exc. VAT
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Atlantis 3400 Litre Underground Rainwater Harvesting System - Home & Garden IrrigationAtlantis 3400 Litre Underground Rainwater Harvesting System - Home & Garden Irrigation
Enduramaxx 3500 Litre Underground Rain Water Tank
A general rule of thumb is to look at your roof area and average local rainfall. For a standard garden, a 1,000L to 2,500L tank is usually sufficient. For commercial use, we recommend a capacity that can store at least 18 days of your average daily water requirement.
While both collect rain, a harvesting tank is typically larger, made of thicker industrial-grade plastic, and often features specialized 'calmed inlets' and overflow siphons to improve water quality and allow for pump integration.
Yes, a filter is essential. It prevents leaves, moss, and debris from entering the tank, which keeps the water clear and prevents the buildup of sludge that can smell or damage pumps.
Yes, but this requires a more advanced 'Header Tank' or 'Direct Feed' system with a pump and a mains-water backup to ensure you still have water when the tank is empty. It also requires dedicated pipework clearly marked as non-potable.
Our tanks are made from opaque, UV-stabilized plastic which blocks sunlight. This prevents algae growth. Combined with a good pre-tank filter, the water will stay fresh and clean for long periods.
The tank must be placed on a flat, level, and fully supported base—usually a 100mm-150mm thick concrete pad. This is vital because a full 5,000L tank weighs 5 tonnes; an uneven base could cause the tank to split.
Absolutely. You can 'daisy-chain' tanks at the base using a linking kit. This allows them to fill and empty at the same level, effectively increasing your total storage capacity.
If you only want to fill a watering can, a gravity-fed tap is fine. However, if you want to use a hosepipe, sprinkler, or supply water to a building, you will need a submersible or external surface pump.