If I have about 185 gal fish tank [bottom portion of IBC], and am starting with two 75 gal grow beds (sans rock) [top 12 inches of IBC].
Is there an equation to determine the correct size (how many gallons) my sump should be?
I have on hand what should be a good 40 to 50 gallon basin I would like to use, but is it big enough?
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