Pump size for PVC overflow

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Fishboy15

New member
I am making a DIY PVC overflow(joeys overflow) wondering if I have a .75 pipe with a 1.5 inch weir, what size size should I get? Can anyone recommend a good, not expensive, submersible pump for my sump? My tank is 29 gallons. I believe he says in his updated video that .75-1.5 inch pipe would handle 600 each.
 
The pump sizes depends on If you use hose or PVC. How high it is from the sump to the top of the tank. If you use PVC the diameter of the pipe and the number of 90•s and or 45•s. Do want to run other stuff off the pump or is it for just the return? If you want to run other stuff as well then you need to over size the pump. Do you want an AC pump or a DC pump? What is the total volume of your system (sump+DT)? As for AC pumps Eheim or Syncra. As far as DC I couldn't tell you much in the way of whats good other then the Vectra
 
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I tried the 3/4" one and it wouldn't keep up with my 600gph return for ****. so I made a 1" with 2" sleeving and it now keeps up with the return pump just fine
 
How do I make more water get sucked into the intake pipe? Right now my intake where the water goes into, to the sump, is not getting enough water through it. Right now it's just barely overflowing to the intake pipe and not enough water is going through the sunp
 
Fishboy15 said:
How do I make more water get sucked into the intake pipe? Right now my intake where the water goes into, to the sump, is not getting enough water through it. Right now it's just barely overflowing to the intake pipe and not enough water is going through the sunp
Click to expand...

Is this because there is not enough water flowing through the overflow or is there not enough flow pumped to the display tank?
 
I think my pump isn't pumping enough water to the display to make the overflow work harder and suck In more water. What pump should I get for my 3/4 overflow, it's a mix if PVC and hose.
 
You should be sizing the over flow to you pump not the pump to you over flow. You asked about the pump in your other post. I showed you how to look it up. You want about 220gph with head loss. You obviously have some crapy under power pump. Also it would have been easier and better to drill the tank and put an interal over flow in. They don't cost that much and you would have been done with it already.

See post

http://www.reefcentral.com/forums/showthread.php?t=2593458

The mag5 you asked about would work if your not using PVC on the return line. Mag pumps make a lot of noise FYI

See calculator

http://www.reefcentral.com/index.php/head-loss-calculator
 
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Good luck..
I wouldn't be caught dead with that "overflow" in my tank..
Its an accident waiting to happen..
Hope you have flood insurance..
 
Fishboy15 said:
Why would the mag drive work if I don't use pvc
Click to expand...

Because other factors come into play then. Such as pipe size number of 45s and 90s. You would probably have to go bigger pump wise. I'm talking about PVC on the return pump not your over flow.
 
Already seen the video long before your post. An in tank over flow is the safest to have. On top of that PVC in the tank like that is ugly but to each his own.
 
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When you get tired of the pos pvc overflow, look for a good overflow box made for use in aquariums.
Those have been tried for a couple decades and they really are prone to failure.
 
An overflow where your telling me I need a vacuum pump to make it reliable is a crap design to start with.
 
Lol I can find comments too where it says it works perfectly and 100% fail proof, which does nothing for me or you. You paint the PVC black with aquarium safe krylon paint, with an already painted black background. The output of the overflow is 1 inch below the waterline. So 1-3 gallons will drain into the sump, which would have 10+ extra gallons of room to help with this issue. The outlet is near the water like so draining the whole tank is impossible. The loud noises are easily avoidable and not that terrible to begin with. If you do it right and follow directions you won't have those issues. You need to cap the stand pipe(tallest pipe) to lower the noise. The one I tried doesn't have a loud noise. The restricted flow is probably because of not correct air tight sealed or wrong PVC diameters for your pump. The bubbles are from having too big PVC intake or weir that's causing bubbles. Joey made a video of this years and years back before having YouTube fame. He just upgraded his old version to this new version. He's not just putting out into for the money. Iv seen many people have these for years without trouble. It's easy to say hey just buy a premade fail proof one for $200. Just cause a big manufacture makes them doesn't make them 100% safe. Just cause you have the money to buy a brand new one, doesn't mean this DIY one doesn't work. I appreciate the input though to understand not to always listen to people because if you even haven't even tried it or even watched the video, your comment is irrelevant to just say it's a pos and just buy a new one. Yeah it's easy to buy one online but it's fun to save money and build my things DIY. Iv done a lot of research and I respect your comments but this will work, you have to do it right. It works 100% because I said so!! Haha
 
Came here to double check with other users and apparently none of the negative comments have tried them. Just gotta use your head a little more and I like to save money also rather than just over paying for a plastic box.
 
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