return pump and over flow

cant get my return pump to match up eith my overflow rate any tips

 

leave the overflow drain open and unobstructed, add a ball valve to the return line and throttle it back till it equalizes

 

thats what i have been doing i will never get an exact match that way like to measure the flow in to the flow out 1 flow out changes buy a tenth up and down every second so as long is it is as close as i can get it to wear the diffrence between them is in check by evaporation correct

 

ok, trying to read that gave me a headache, any way to post a pic of your overflow and sump? it almost sounds like you have duel overflows and cant equalize them which means your gonna want to do a pair of durso drain pipes or hofer gurgle busters to silence them.

 

Please, use punctuation, if you're not going to use effective grammar.

 

haha sorry. What i was saying, before i got caught up in typing what i was thinking. I have one over flow okay, threw half inch pvc pipe. I dont know the gph threw the pvc pipe... but i know the gph threw the return pump. getting the two of them to flow at the same rate is impossible. so the overflow could be coming in, at 340.1546 gph. Where as the return could be off by a few decimels with would be equalized by evaporation

 

The overflow should be fed by the return. That is, when the return pump is stopped, a small amount should drain through the overflow, then the system should stop. It's not reliant on the overflow, only the return.

The only issue you may have is when the pump is pumping faster than the overflow can....flow over. Then, you have to dial back the pump with a ball valve on the return line.

 

They dont have to match exactly, the overflow will only draw the water it can based on the return pumps ability to put the water in the tank, if the pump cant keep up, the overflow will pause till it catches up and water can flow into the overflow box again.

If that is happening you need to be sure the return line ball valve is wide open, and then get a slightly larger pump as soon as possible.

 

No balancing is needed as long as the overflow is the correct size. How are you plumbed, what overflow and what pump do you have? 1/2" plumbing is pretty restrictive and may be your problem. Does the overflow have a standpipe?

 

im having the same issue, got a 1 inch pvc over flow and an adjustable 800gph pump. even if i dial down the pump it still out does the stupid over flow. i even have a ball valve in it. here is the problem though when i bottle neck the flow with the ball valve it causes a vortex in the pipe and makes tons of micro bubbles in the tank. cant figure out what the heck to do.