Undergravel... Sump???

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Hybridfish7

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MFK Member
Dec 4, 2017
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Anyone ever tried making a sort of sideways sump but under gravel? Input and output placements would be the same as a normal sump but I feel like it would save space if you can't fit an actual sump outside the tank
And of course if the tank is big enough to need a sump and fit something like that in the first place
Sort of like a sump built into the back or side, but of course, the bottom
 
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