How do i get more water from my overflow to my W/D system?

[Kafer]

Up until recently I have been using a Powerhead 802 to pump water back to the tank from my wet/dry filter to my 75 gallon tank. I was told that I should really have a lot more water the head pressure on the 802 it wasn’t pumping near enough water. Recently I got a Little Giant 2-MDQ-SC as my return pump. When I plumbed in the new pump I installed a ball valve. If the ball valve is wide open, the pump will eventually suck the wet/dry system dry. How do I get more water flow to the wet/dry system via my overflow box so I can open up the ball valve for more water movement? Am I just better off running it as is and installing the 802 inside the tank? I’m trying to keep as much equipment out of the tank as possible. A guy at one of the LFS said to use another U tube but that didn’t seem to help the issue. Thanks in advance.

 

[reefbound]

Get yourself a bigger/better overflow to match or exceed your pump,dont worry if you exceed because the overflow will only give what it gets back from the pump...

 

[melosu58]

drop the overflow lower into the tank.

 

[Kafer]

Get yourself a bigger/better overflow to match or exceed your pump,dont worry if you exceed because the overflow will only give what it gets back from the pump...

I have found a couple overflow systems online that will supposedly do up towards 1000 gph but they are over 100 dollars. I was thinking there has to be a cheaper way.

drop the overflow lower into the tank.

I will give this a try tonight.

I have another overflow setup, do you guys think it would be beneficial to add it as well or would it be more hassle then its worth?
Thanks for the advice !