Foster
Premium Member
qwuintus said:hey there man, i am tired of drilling slots for an internal overflow so i gave up and now im going for the eggcrate. well my question is how much flow do you get with your overflow since its basically entirely open. also how high is the waterlevel is inside your overflow. im going to have 2 overflows 10" wide with eggcrate in each corner of an 80g with 1" bulkheads. think it will work
My over flows a 6" x 9" with 2" drains. I wanted to keep the smaller overflow baxes but wanted them to not be a bottle neck for the 2" drains, that is why I had them cut flat, I get way more flow our of a smaller overflow now. The eggcrate give little resistance compared to the slots. Im guessing about 6000 GPH between both overflows . . .. ocording the a chart I read. Seems about right.
If you only have 1" drains, you can getaway with having slots if you want.