Leak in return line in inground pool

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  #1  
Old 08-07-15, 10:42 PM
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Leak in return line in inground pool

I've got a problem and want to see how others have handled it. I have a 40+ year old Sylvan pool. Cement and plaster. 20'x40'x9' deep. Two skimmers, two bottom drains and two returns.

I've winterized it every year with no problems. Last winter was cold and long here. It appears that one of the return rubber plugs leaked, the line froze and I now have a leak in the return line. The pool will loose 1/4" in approx 12 hours only with filter running. Filter off..... no apparent leak/water loss. I only run the filter 12 hours a day unless heavy storm filtration is needed. I am in a highly sandy area so there is no sign of water leakage up top.

There is a complete cement deck around the pool as well as a cement deck to the pump house. I know how to fix leaks but how would you determine where in the return line the break/leak is ?

I've been reading about pool leak specialists. What would they use to find the exact leak point in the line ?

I've also been looking at a product called Fix-a-leak for pools. Has anyone used this product. Any opinions........FixALeak Original

As always.... thanks in advance.
 
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  #2  
Old 08-09-15, 03:11 PM
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fix a leak could work for you, worth trying. To find leaks(pin point) companies are using equipment like sonar I guess you would call it. They can find your leak from up top and tell you where to dig. If you have separate return lines let me know. I would have another suggestion.
 
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Old 08-09-15, 03:47 PM
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Does the plumbing run beneath the cement, around the side of the cement, or encased in it. Unless it's encased in the cement you can dig around the edge and run the filter and look.

FWIW I've had 4 leaks in my return lines, 1 was where a tree root had crushed the pipe, the other three were at the T's where the returns went from the line to the pool, it might be worth checking there.
 
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Old 08-09-15, 05:59 PM
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The cement deck is approximately 4' wide. I'm sure the lines are close to the pool which would mean digging down three feet under the cement. Ultimately that is probably what I'll have to do but I'm not going on an exploration dig.

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I only have one line at the filter. I'm fairly certain it tee's off at the deep end return as the filter is directly in line with that skimmer and return.
 
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Old 08-09-15, 07:43 PM
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best bet would be to call American leak detection if there is one there.
 
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Old 08-09-15, 08:26 PM
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I did a search for them and the first thing I pulled up was a complaint site. They don't have an office that covers north Jersey. I may call them anyway to see what they say.
 
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Old 08-18-15, 10:32 PM
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I did see on YouTube a contractor who pumped something into the suspect line and it worked. It was a two-step process. I forget if a microphone was used to pin point the leak. Don't think FixA Leak was the product.

Maybe Anderson Mfg Co @ Pool Leak Detection and Repair Information and Solutions. - Anderson Manufacturing Company, Inc. might be helpful in finding someone.
 
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