Quote:
Originally Posted by Kimmi7
its a 4' long by about 2' tall and 18" wide tank. I dont have a sump yet as I am not sure what size to go with, was thinking 20g tall to a 30g tall. I'd like to have the type of sump that has the eco system in itself. I was thinking of drilling the holes on each end of the tank on the sides, as this will be in the family room and i have room for pipes on any sides. Thanks for the welcome. It actually was my boyfriends idea for a sw tank and we do have the empty one just sitting there lol
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When designing your sump leave enough room in the top section to fill up with water from the display tank when your return pump gets shut off. Your return line will siphon water back down into the sump until it drains the main tank down far enough to let air into the line, thus breaking the siphon. A check valve can prevent this but check valves can fail and you will be thankfull that the sump can handle the backflow.
A sort of related subject is hang on the back overflows that use a siphon system. Some people use these so they don't have to drill the tank. The draw back is that if the siphon fails your return pump will still keep pumping water out of your sump until it is dry and will likely overflow your display tank onto your floor.