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Old 11-21-2013, 05:32 PM   #11
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Rip out the airline tube. You don't want any airline inside this section of the PVC. Put check valve end(part airline slips over) in hole. Seal check valve in place. Then attach airline to other end of check valve. And you are done.

Ideally you want the check valve to be at the highest point internally of that U tube section. Based on the picture it looks like that spot is on the other elbow because it is leaning back a bit.
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Old 11-21-2013, 05:39 PM   #12
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So can i just swap the elbows with the holes to have the check valve hole on the in tank side?
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Old 11-21-2013, 05:40 PM   #13
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And can i get away with gel superglue or do.i .eed to silicone it
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Old 11-21-2013, 05:46 PM   #14
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You can if it's not all glued together yet. Actually if it's not all glued together I would leave elbows as they are and just shorten the piece between the elbows so the elbows touch each other. This will help eliminate some of the lean.

It's more ideal to have the check valve on the elbow you have it on now as long as it is the highest point or close to it. Air will get pushed/trapped in the top back section on that elbow. Occasionally you can try to suck air out. Or optionally add an aqua lifter pump.
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Old 11-21-2013, 05:51 PM   #15
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Quote:
Originally Posted by h20addict View Post
And can i get away with gel superglue or do.i .eed to silicone it
I believe I just used a tiny bit of PVC glue in the hole to bond the two as it melts the plastic together creating a tight seal. Then silicone outside the hole to make sure. I suppose superglue gel will work as well in place of the silicone.
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Old 11-21-2013, 06:11 PM   #16
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Ok, im going to shorten the top section and.pvc glue in the check valve as mentioned in a few.moments
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Old 11-21-2013, 06:59 PM   #17
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Check valve side marked out does go on top and.not in.the hole correct
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Old 11-21-2013, 07:12 PM   #18
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Should have an arrow on it that you want pointing away from PVC. You want to be able to pull air out of the PVC without air going back in. Hence the check valve.
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Old 11-21-2013, 07:25 PM   #19
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Just a note. 1/2" overflow won't move much water. At least not as much as you would think. Not sure on GPH. You would need to test/measure that.
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Old 11-21-2013, 07:59 PM   #20
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Still doesn't want to start up. Am i missing sumthing obvious?
I didn't want to glue it till i had it working but im at the end of the road here...
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