





www.aquariumoverload.com
Pipe Size Drain Flow
¾" 300 gph
1" 600 gph
1¼" 900 gph
1½" 1300 gph
2" 2300 gph
3" 5200 gph
This is the approximate water flow this size pvc pipe can drain.

Plumbing for my 240 gallon display tank.
Here is a link to a useful reef keeping article on plumbing.
