Hello, I just bought a house with a pool, 20,000 gallon kidney shaped, and I bought a safety cover because I have young children. I have found that each week I need to vacuum, there is a visible layer of dirt on the bottom. Is this normal, I thought the cover would help keep the pool clean? I live in the San Francisco area.
Any advice on which type of automatic pool vacuum to buy, given I would like it to run under the pool cover and would hope I don't need to inspect it often. I bought a used Kreepy Krauly but it doesn't move around well.
Lastly, how frequently should my filter be backwashed.
Thanks in advance,
Eric