First time posting, long time "learner" from this forum! Just got my pool installed in Sept 2014. (16x32 Vinyl Liner In Ground)
I think I have a leak in my pool. We are definitely concerned, but luckily it does seem to be very slight, so I cannot decide if I am just crazy. Here are two pictures of water levels from 18 hours after I marked them. I did some looking on this forum and you all discussed evaporation (could be up to 1/4" without a cover) and fountain usage (more evaporation) as two causes among others. So I decided to stop using the fountain completely, and cover the pool 100% during the testing to eliminate those two variables. Our cover is a safety cover that fully seals the pool with the exception of about a square inch on two corners.
So yesterday at 1:00 I opened the pool, marked the skimmer faceplate, the skimmer inside, and also did the bucket test and closed everything back up. Already this morning I went out, and we were down about 1/4" in about 18 hours. The bucket test did show some evaporation in the bucket, but not the same loss as the pool. As I said it was a small change, but I do think it might be a leak! Yesterday, before I started the bucket test I inspected some things like the equipment pad, and skimmer faceplate and skimmer, and I did find a crack in the skimmer wall itself! This crack can be seen on the picture. It almost looks like a long hair stuck to the side. I did the food coloring test on this area and did not really see any dye being pulled into the crack however.
I have out pool set to 80 degrees and right now the temps in North Dakota vary from 40 degree lows to 70 degree highs, which I know can add to evaporation, but we have had the pool closed up during the entire test, so I am not sold on it being the evaporation thing.
I am going to seal the skimmer crack with some JB Water Weld on Wednesday once I allow the test to go a little more and really convince myself I am not crazy. Does that seem like a decent fix? Any other words of wisdom or advice would be greatly appreciated!
September 2014 Water Officially Added to a 16x32 Vinyl Liner In-Ground Pool with Auto Safety Cover in North Dakota