I would wash it out with a bleach solution and rinse well you might want to scrape the glass with a razor too before you wash it ou and make sure it it really clean. I think that a ten gallon will be a great sump for a 55.
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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 and Macro
(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) sailfin tang |