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Leak Detection Tips
There are a few simple tests one can do to establish whether one's pool is leaking. One way is to remove the rings and balls from all the return jets (aimflow jets) and cover them with plastic then turning the rings back on over the plastic. The pool pump should be off during this test. The trick is to make sure there are no creases in the plastic as water will pass through these creases in which case the pool is not being sealed off. Some tape should also be placed at water level to mark the position where the water level started off at the beginning of the test. Work in 12 or 24 hour cycles to check if the water level has subsided.
The other simple test is called the bucket test. Fill a bucket to about 5cm from the top and put it on the 2nd step of the pool. The pool water should not flow over into the bucket. Mark the water level inside the bucket with a piece of tape and on the outside of the bucket mark the level of the pool water. The pool pump should be off at this point to be able to mark the level when the water has settled. 24 hours later check the level in the bucket and also outside the bucket to see if the water level outside the bucket has dropped lower than the level inside the bucket.
Typically, the water level will stabilize on the problem area for example, if the light casing was leaking the water level would stabilize somewhere on the actual pool light. If the water level stabilizes below the opening of the weir but above the return jets then it is safe to assume that the weir is not the problem and neither is the light therefore the return pipes could be the problem. Often, we find that the actual return jets have sheared off inside the concrete wall or behind the fibreglass shell. This is usually due to movement of the ground around the pool and can be a result of excessive rain or pooling of rainwater in a specific area on the paving which causes the ground underneath to soften.
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