I have a few questions that I don't know where to look for the answers. Lets see if I have this right. (or not)
A standard all glass overflow is rated at 600 gph. On both my 65g and my 75g, I only have one overflow in each tank. No matter how many gph the pump can push out, I will only get 600 gph is that correct? Is there any way to increase the flow thru the overflow? Even if I increase the size of the PVC, it still will get decreased thru the bulkhead. Thus remains the fact that only so much water can exit thru a 3/4 inch hole at any given time. 600gph is only 6x the tank volume turn over. I would like more then that on the 75g. I do have seio pumps I can use for flow in the tank, but that doesn't help the flow thru the sump. I'd love to have a mag 12 or 18 on the 75g, but if the overflow can't handle it, it doesn't make any sense to buy one.
Can anyone chime in here with some help / answers?
Thanks Much
Angie