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75 gallon return

  1. General Reef Discussion
    hi all i have few questions 1.i have 2 pfo el 2-2 retro kits that r running 2 t12 48 in vho each. will these ballast run a total of 4 36 in t12 vho lanps. 2. is a mag 9.5 to much flow for a 36 in wide 75 gal with 2 k3s in it? 3. i was given some figi dry rock. when it was dryed it had so...
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