My pool has the dreaded slow leak, I failed a bucket test this weekend, however there was rain, so performing one right now. It has already partially failed.
I have checked all the suspects. Skimmer, returns, some cracks, light opening. I want to check my main drain bottom.
My idea was to take aquarium tubing, put a check valve at the end of it, put food coloring in it, tie it to a pole using duct tape, submerge it to the main drain opening and blow.
Otherwise I just cannot find this leak. There are no bubbles in the pump bask whatsoever, it's complete water, with nothing more than condensation forming around it. The area around the pump is bone dry. This leak has existed for a few years now. It's so slow that I usually live with it, but now it's a real nuisance.
I will be retesting the area around the light but my initial test showed nothing. I have never gotten any dye to flow into any of the plumbing that I can check.