Bull Dozier
Footballguy
I think Moses put it in.How old is this pool?
Seriously though, I don't know. I don't have documentation on when it was put in (we bought the house 5 years ago. House was originally built in '49, and numerous additions since then. Best guess is 70s, maybe 80s. When did concrete go out of style?).
No built in drain in the bottom. One tube out, and one return from the filter. Seems lacking in circulation to me, which i think is why we generally have issues. I don't think the set up gets the chemicals thoroughly spread through the water, but apparently the previous owners never had issues like we have had.