Well I decided I wanted to reseal and put my 75gal tank back up. It had a 55 gal sump in a homemade stand. When it was running before I always had issues working on the skimmer or forgetting to shut it off when I turning it off when I shut the return pump off causing all of the skim to overflow back into the sump. So I took an old 20 gal to set next to the stand that the main overflow will drain into that will have dual 4" filter socks then the skimmer. Then it will drain into the 55gal where the other equipment and refugium are. The 75 has an eshopps S overflow box that is rated for 600 gph and my return pump is a Jebao DCQ10k. Hoping I can use a 3/4" drain to get around 600gph and not use a valve. Not sure what kind of drain to use from the 20 to the 55.
And suggestions before I get much further?
And suggestions before I get much further?