Hi all,
I'm having an issue with slow flow into my frag tank. Hopefully the picture shows up clear enough. I'm draining one side of the display (durso setup) into the frag tank, with a shadow overflow from the frag back to the sump. I'm having slow flow from the durso so much, that the water level in that side of the overflow is the same level as my display. Even if I turn off the return pump, there's barely any flow to drain. I would think that gravity drain should be quicker than ~1gph. Yes, it's that slow. The other overflow (direct drain to sump) is working fine. My first step to remedy was to change the air line in case of any blockage, as it's been submerged in water for a while.
Any suggestions would be greatly appreciated. I thought about changing the setup again to have two return pumps in the sump, but I'm looking to avoid that if possible. Thanks!