I have an idea for a sump, but im stuck on how to make an over flow dose any 1 have any plans on how to make a small and simlpe DIY overflow. i want somthing small because its only for a 20 gallon tank.
somthing that syphones water into the pump would be nice.instead of having somthing pump the water into the sump because having water pumped into the sump could cause a flood if the pump that returns the water to the tank dosnt pump water back into the tank fast enough.
drill a hole for a bulkhead a few inches from the top, and make sure u get the bulkheads that are threaded on the inside. Then you can screw in a intake screen.
I don't think that you quite understand how a sump and overflow work. Here are some links that thoroughly explain it as well as having plans for a diy overflow. If you have any questions after you read all this I will be pretty supprised but hey we will try to help http://www.melevsreef.com/what_sump.html http://www.melevsreef.com