90g corner overflow

So I have a 9.5 mag pump and I have 1 1/2 pvc coming off it. I have to restrict the flow because the overflow has the slits and it wont push thru fast enuff. Is there something I caan use to mod it like cutting them out and glueing something back. The drain will handle more its a herbie with only two bulkheads

 

I'm doing a herbie in my 90 build too so I may have that same problem. I guess you could dremel the slits. Is your tank established yet or are you just setting it up?

 

Just setting it up. I figure I can cut most of them out I just dont know what to put back there so fish dont get sucked over. Do they make plastic chicken wire

 

I wouldn't cut them out, just make the slits deeper

 

Yeah but thats still not alot more water to run thru if I made them wider it only opens each one alittle.im thinking of useing nylon screen. If I cut half the slits out the structure will still be there any just glue it on it would be way more flow and I could turn the pump up alittle more. Ill go slow I need to find out how much flow my emergcy drain will handle thats what I want. It just kills me that the pump is that restriced.

 

Well let me now how it goes. I'll be setting mine up in a few weeks and may run into the same problem.

Just to be clear if you open the pump up it runs the sump dry?

 

No it makes the water go to high in the DT the herbie will drain the water to the sump fine. But the slits dont let the water leave the DT fast enuff.

 

What does too high mean? It might keep up fine once it goes higher. As water gets higher, more water should exit the overflow to the herbie.

 

Yeah but its at the top of the slits now and my pump is chocked more than I want if I open it up anymore it will go over the overflow

 

Gotcha. Does your overflow have return holes in the top? Mine does. Since you are doing a Bernie I am assuming you won't have your return enter through the overflow so you could use those return holes for more overflow. You'd have to protect them with screen or something though.