Sump Build

[monizb]

Hey guys I have a 20 gal that I want to turn into a sump for my 75 gal tank not sure what hight I should be making the glass panels for the skimmer area rock area and return pump area

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[Pistol]

You want to base the height of the baffles on the amount of drain back you get from the tank when the return pump shuts off so the sump doesn't overflow, then adjust the height of the skimmer by putting a base under it.