so I have a pvc overflow made with 1" sch40 pipe is it enough to drain to stay within reason of my 2500gph pump ? im sure I will have to throttle the pump back a bit anyway... but was told I should have 2 drains in the tank do I reall yneed to have 2 drains ?
DIY pvc overflow question/concern
- Thread starter rob1984
- Start date
Is 2500 gph with zero head pressure? What is the diameter of your return(s)? I believe you will need to throttle back your pump, but probably not much. If I recall correctly 1" pvc will drain around 800 gph if it is not set up as a siphon, but dont quote me on that.
Return is 1" pvc as well, and I believe its 2500gph@4ft but I'm not sure I'd have to try and look them up and see if I can find em .... I thought 1" pvc drained more but I maybe wrong ...
Drains are the DIY pvc copied from uray joey on youtube, same style as that.
Drains are the DIY pvc copied from uray joey on youtube, same style as that.
1" with a 24" straight drop full siphon will drain about 1200 gph. With that homemade overflow you wont get anywhere near that for a couple reasons. You wont have a full siphon and with all the turns it will slow the water down a good deal. I might have over estimated on the 800 gph.
Hmmm, wow .... Well maybe I'd be beetter off to get a eshopps overflow box the 1200 or 1800 and just have it n my sump rather then the diy pvc ones .... Or even a crp overflow that allows that kinda gph 1200-2000 maybe ? Less headache and worry and less room taken up in the tank ? What do you guys think ??
I have an Eshopps 1800 set up on my 180 with the dual 1-1/2" drains and a 2100 GPH return pump (at zero head) with about 5 ft of head and I have to throttle that back even. I love the overflow box though, it runs flawlessly.
That's what I'm starting to wonder .... Overflow like that will take up less room inside the tank and will have a better siphon compared to my pvc overflow (diy) .... And doesn't cpr make a overflow box bigger then the eshopps 1800 ? I thought they had something around the 2000gph or more