Open 7 days a week, 9am to 5pm Monday to Friday & 10am until 3pm weekends (Winter Hours and Bank Holidays vary) 

Summer offers - Get 10% off all Evolution Aqua products, use code GET10 at checkout.

For those Koi and pond enthusiasts who are not as careful as they might be, we do also sell the spare Bio-UV Replacement Quartz Sleeves.

We also recommend changing the Bio UV Quartz O Ring Dia 25 mm whenever changing the Quartz.

The Bio Uv Sleeve insulates the lamp from the water, allowing the lamp to operate at the optimum performance.

The ultraviolet lamp will remain independent of the flow of water. Bio Uv Sleeves are of open at one end only and are made from pure fused quartz.

Quartz is extremely transparent over a wide spectral range, with a low coefficient of thermal expansion and quartz is resistant to scratching and thermal shock. Fused quartz is made form crushing and melting natural materials. The purity of quartz is paramount to the efficiency of the lamp and sleeve.

Bio Uv Quartz Sleeves available in the below 4 sizes

  • Bio-UV 10 Replacement Quartz Sleeve 324 mm x 25 mm Dia
  • Bio-UV 20 Replacement Quartz Sleeve 594 mm x 25 mm Dia
  • Bio-UV 30 Replacement Quartz Sleeve 840 mm x 25 mm Dia
  • Bio-UV 40 Replacement Quartz Sleeve 1094 mm x 25 mm Dia

Bio Uv Quartz Sleeves

  • Greater ultraviolet transmission
  • Low coefficient of thermal expansion
  • Increased hardness and resistance to scratching
  • Higher resistance to solarisation or darkening from ultraviolet radiation

Quartz sleeves are available for the Bio UV 10, Bio UV 20, Bio UV 30 and Bio UV 40.

We aim to dispatch orders received before midday Monday to Friday on the same day where possible. In most cases our items are available for 1 to 2 day delivery at a competitive price and are trackable via DPD or APC.

Delivery costs for standard items in the UK - £5.95

(Surcharges do apply to remote postcodes)

Heavy items - £9.95

Pipe - £14.95

Palletised items - Some large oversize products, typically items weighing more than 30kg, may require delivery via pallet. Standard Pallet charge is approx. £50.00. To ensure there are no delays with delivery, please include a contact number when placing the order.

Overseas – DHL and UPS, cost based on weight / volume at checkout.

Below is a list of documents that you may find useful.

Can’t find what you’re looking for? Call 01777 839176 or use our contact form