I'm getting ready to do a water change in the morning and I decided to check my SG to see where I'm at compared to the water I'm putting in tomorrow.. My SG is at 1.021-.022!!! not sure how this happens.. I change my water with an SG at 1.025-.026 each week. I do WC's normally 10g a week...

I wanted to ask . i was at first doing frequent water changes. now ive decided to do a partcial change one time a month and do top offs threwout the week and clean the skimmer filter and such as needed for the month. well after testing i didnt find any need to do this sooner the water is great...