First The return pump may be too powerful for a UV light I have no idea how many gph you are pushing but you want to have slow flow through your UV .
Seccond, I wouldn't use any filter media on your sump return pump at all you will be trapping beneficial creatures like copepods and amphipods in your sump instead of being returned into your display as a great food source.
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120 Gal Reef Tank Born 12/06 160+ Lbs of Live Rock 80 Lbs Live Sand
25 Gal Sump with fuge 15 lbs of Live Rock
(2) 250w 20K MH and (4) 65w CF Atinics (6) Moonlights
Aqua C EV Skimmer
(4) Hydor Korillia # 3s
(1) yellow chromis
(1) green coris wrasse
(1) True Percula |