siphon and overflow problems. HELP! - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 29 Old 01-11-2009, 10:59 PM
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you have micro bubbles blowing around inside the tank, or bubbles forming inside the u-tube?
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post #12 of 29 Old 01-11-2009, 11:02 PM
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sounds like your pump is too strong for your overflow box try a bigger over flow or a less gph on the pump
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post #13 of 29 Old 01-12-2009, 10:45 AM Thread Starter
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you have micro bubbles blowing around inside the tank, or bubbles forming inside the u-tube?
I don't see bubbles in the tank, but there entering the siphon from the tank side and accumulating at the top on the siphon. That is why I was thinking that there is a crack in the side of the siphon (it is not brand new).
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post #14 of 29 Old 01-12-2009, 10:46 AM Thread Starter
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sounds like your pump is too strong for your overflow box try a bigger over flow or a less gph on the pump
Will a bigger overflow increase the flow of water to the sump?
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post #15 of 29 Old 01-12-2009, 05:27 PM
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you could have mirco bubbles in your display that you cant see, eventually they are collecting in the upper part of the U in the U-tube. This is a problem because if that fills completely up with air your siphon will break and the return pump down in the sump will still be pumping, causing a flood.

An overflow rated for a higher GPH (gallons per hour) will drain more water to the sump. A pump rated for less GPH will return less to the display. You want to try to match flows as closely as possible (taking account head loss on the return pump) and a way to make it easier is to T off areas and add ball valves
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post #16 of 29 Old 01-13-2009, 12:47 PM Thread Starter
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I think I do have micro bubbles because I thoroughly double checked my siphon tube and there are no cracks. Is there something I can do to stop micro bubbles from getting into the U tube or the tank in general? Any tips could help : ).
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post #17 of 29 Old 01-13-2009, 03:11 PM Thread Starter
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Quote:
Originally Posted by onefish2fish View Post
you could have mirco bubbles in your display that you cant see, eventually they are collecting in the upper part of the U in the U-tube. This is a problem because if that fills completely up with air your siphon will break and the return pump down in the sump will still be pumping, causing a flood.

An overflow rated for a higher GPH (gallons per hour) will drain more water to the sump. A pump rated for less GPH will return less to the display. You want to try to match flows as closely as possible (taking account head loss on the return pump) and a way to make it easier is to T off areas and add ball valves
I did add a ball valve. Where could I put a T in the line? Before or after the ball valve? Does a T exist that has a ball valve in it?
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post #18 of 29 Old 01-13-2009, 03:24 PM
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find the source of the microbubbles, im going to guess either your return pump is sucking them in, or where your return pump returns in the tank is blowing them.

i personally have my return pump going up with a union ( for easy removal and cleaning of the pump ) then a T which goes over to my refugium with a ball valve on it. My main return itself is not ball valved off just the line that is T'd off of it is. Opening/closing this regulates the flow going up to the tank. My return is split into 2 lines feeding my sump. One to the skimmer side and one to the refugium side with my return pump in the center. If you need me to explain more feel free to ask
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post #19 of 29 Old 01-13-2009, 03:32 PM Thread Starter
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I'm more of a visual learner. Do you by chance have a picture or diagram of your set-up?
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post #20 of 29 Old 01-13-2009, 05:11 PM Thread Starter
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Never mind. I've got it. Thanks. But could you elaborate on ow to find the source of the micro bubbles? What do I look for?
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