I have a 20gallon tank, with a stand and hood (although I doubt the hood ould do for saltwater, it only holds 1 bulb) and I was sort of hoping to convert it to saltwater, BUT......I don't know if I ever will.
Do you *have* to have REALLY strong lights? I know you do for some of the really fancy stuff, but what could you keep with say.......90watts of light? ( I have a feeling that not much would live

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