Evolution AquaEVO 30 Watt UV Clarifier/Sterilizer

Out of box and installed in 20 mins and with in 12 hrs it was already showing its work. 24hrs later beautiful

Cleared my green pond in a few days.Would definitely recommend.

Upgrade from 18 watt lamp and definite improvement in clarity of water although still not quite perfect. It may be a little more time needed as 4500litre capacity pond.