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Old 07-27-2011, 08:16 PM   #31
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When you glue the pipe make sure you give it about a half turn before the glue sets
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Old 09-13-2011, 02:54 AM   #32
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Sorry to bump up an old topic.

I can't understand how the siphon is maintained when water drains below the intake. I thought to maintain the reserve has to be inline with the tank water while still carry water over the highest point. I imagine maybe the valve keeps air out enough to maintain water over the bend? What happens if you accidently knock the tube?

Would you elaborate a bit on the physics behind the intake siphon and maintenance please?
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Old 09-13-2011, 12:18 PM   #33
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I was just like you aqheart when I was starting this. All I can say is I tried so hard to understand the dynamics and such, but in the end when nobody could give me a definite answer I just went out and made my own. It worked but you should test with a fake power outage to make sure the siphon is held.

The only thing I ever had to do was initially suck on the tube so the water would flow, after that I havent had to do anything. Other than that I would say look into what glue you are using. I used some glue that was supposedly safe that killed my fish, after that I just didn't use any glue and jammed the pipes tight and havent had any problems.
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Old 09-13-2011, 04:36 PM   #34
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Quote:
Originally Posted by aqheart View Post
Sorry to bump up an old topic.

I can't understand how the siphon is maintained when water drains below the intake. I thought to maintain the reserve has to be inline with the tank water while still carry water over the highest point. I imagine maybe the valve keeps air out enough to maintain water over the bend? What happens if you accidently knock the tube?

Would you elaborate a bit on the physics behind the intake siphon and maintenance please?
The only time mine ever drops below the intake is when I do a water change and then I just shut off the valve below my tank before doing that and as soon as the water gets back above it I open it back up and siphon is never lost If I experience a power outage my sump actually fills and does the same thing as if I shut that valve off and since the water actually never drops below the intake it never loses siphon and when the power comes back on voila I have overflow again
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