Anyone recommend any cheaper options of UV for a 140 gallon tank. Do those pond uv do the same thing for a reef tank or is there a difference.
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Not sure what "cheap" is in your opinion but I have been running an Evolution Aqua 25w for a couple of years with good results on a 135 gallon tank.
White unit on the wall to the left of the tank.
They're dead cheap although I am unsure whether they are available in the US.
Aye. They are. Is there a question in there?All your electronics are mounted right above the tank?
OP, all UVs work the same, quality of materials is different. I would use o recommend only high end UVs due to plastic degradation, however that happens with all units it seems and doesn’t appear to be a problem as far as the inhabitants are concerned.