We had our pool installed 2 years ago, and our main drain has never worked properly. When the drain is opened there are bubbles that come out of the returns. After much fighting with our pool company, they finally came out and pressure tested the main drain and found that there is a leak, and it is under the pool/decking. Their fix was to disconnected the main drain at the pump and plugged the drain in the pool. I am sure they do not want to have to fix the drain due to cost and structural integrity, however compensation for a defective pool is a whole other issue that I will not go into here...
Their comment is that we do not really need a main drain, due to the fact that we have a very open backyard with few trees and not much debris, which is true.
My concern is, since I do not really trust them at this point, what are, if any, the long term consequence's of not having a main drain. I realize the water circulation/turn over will be reduced, which is not really a problem when the pool is being used. The deep end of the pool tends to be a bit dirtier and I just run the Polaris more often, but is there anything I should be worried about if I permanently shut off the main drain? The drain has not worked for the first 2 years, but what about the next 20?
Thanks so much for any insight you can shed on this situation.