Greetings from Tennessee. This is our third year with a pool - last couple of years I have had "professionals" (use that term losely in my area) to close our pool. First year was no issue, but last year was a big issue. When I got ready to open the pool, a friend and I pulled the solid cover off only to find that the pool was 3/4 of the way drained. Now of course the company I paid to close swore they did not do this, however I am convinced they did.
Pool is 16 x 36 with one skimmer, three returns and two bottom drains. The biggest issue I have (and what has kept me from closing by myself to this point) is my filter and pump is located about 10 feet below the pool. I believe that the company last year started to drain the pool below the returns - went to lunch or something and got back only to find the pool almost drained - since it has a solid cover they simply put it on and called it good (at a 400 buck charge).
Pool has not lost water so I do not buy the "there must be a leak" retort by the company.
Anyhow, my question is this: Will a shop vac (6.75 hp) or an air compressor work to blow out the bottom drain knowing that the filter is below the water level or should I invest the money in a mighty vac? I have a shop vac and a small (not adequate) air compressor but I know the "professional" had a blower.