Top/Side mounted overflows

[Danh]

I recently drilled one of my sumps near the top to overflow in to my other sump. It's draining with two 1" bulkheads. I took a little bit of water out of the main tank and needed to top the bottom sump back off so I put the hose in the main tank. I messed up a piece of wood doing that, so while I was trying to fix that I wasn't watching my sups. The middle sump with the top overflows.... overflowed.

I have those overflows wide open. Is there some kind of a pipe I can put on it to make it drain faster?

I am going to get a couple of 3/4 bulkheads today to add them but I don't have a lot of a space left on the 12" wide tank. I went all out and measured them to put them both centered from the half way mark...... so I didn't leave enough space for another 1"....

 

[that_fish_Guy]

Only way it would be able to drain faster is with bigger overflow holes on the first sump.....but if it does not overflow with just your pump and only while your filling with a hose then I dont see how it can be an issue as long as you don't leave the water running

 

[Danh]

My pump is also not running at full power. It's fine for now, but I'll want to turn it up. I figured there might be some kind of a durso type pipe I can put on the inside to help it drain faster.....

 

[Danh]

I'm going to slide an air tube down the line to see if the introduction of some air helps. If not, I'll drill a couple more holes.