Evolution Aqua’s range of UV Clarifiers consists of the evo30 (30 watt UV bulb), evo55 (55 watt UV bulb) and evo110 (2 x 55 watt UV bulb). The evo30 is suitable for ponds up to 30,000 litres, the evo55 is suitable for ponds up to 55,000 litres and the evo110 is suitable for ponds up to 75,000 litres. There are factors that can affect this, in particular surface area of your pond, the amount of shade given to your pond and stocking levels. If in doubt, speak to us at Warehouse Aquatics for more advice. See the full instructions here EvoUVs ensure that your pond water will have amazing clarity, by killing the single cell algae that causes green water. All of our evoUVs have been designed using the very latest design techniques to ensure that the water will flow effectively within the unit, allowing the ultraviolet light to destroy the algae as it passes through. Not only does the evoUV look very stylish, making it a fantastic addition to any pond, but it has been designed with a fully UV stabilized, tough outer casing. This means that the evoUV can withstand the recommended operating pressures. The evoUV has a low energy, electronic ballast that is positioned in a fully water tight compartment, fused, with full thermal overload protection. Your evoUV is built with both safety and low running costs in mind. The evo30 and evo55 units are supplied with 1½” stepped hosetails. This allows easy installation with flexible hose. You can also install the evoUV to hard pipe, using standard 11/2\" BSP threaded male connectors. The evo110 can be fitted to hard pipe using standard 2\" BSP connectors. These are not supplied with the evo110. Every evoUV is simple to install, and are supplied with pre-fitted stainless steel mounting brackets that allow you to fix the unit horizontally or vertically. The evoUV comes complete with a 2 year guarantee for total peace of mind.