The size of the overflow just needs to be able to handle your return pump flow. You don’t want crazy turn over from your tank to your sump so don’t go to big here. You can use tubing but use black since algae will grow inside a clear tube.
You need baffles in your sump to stop bubbles from going back into your display tank. If you will only have a skimmer and return pump in the sump then you only need to baffles the sump just before your return pump.
The sump needs to be able to handle all the water in the return system (overflow, pipe/tubes return lines etc) so when your power goes out you don’t overflow the sump. Your display needs to be able to handle the water in the return pump section of your sump so if you loose your overflow suction you won’t overflow the tank.
Before you do anything read everything you can find on setting up a sump first. Another thing to think of when moving to a sump is water top of. Your tank will need water ever few days in a sump setup due to evaporation and the return pump section size.
Read Read read read…..
Start here….
DIY
