I run my pump from midnight to 0600 when the rates are low. And I switch it on when the dogs are in the pool and for a couple hours after to skim the dog hair.

I've been doing this for 2 weeks ever since we got the timer and have not noticed a difference in chlorine levels, Cl consumption, or any new and unusual algea blooms. I test the water daily with a Taylor kit.

My new plan is to run the pump on recirculate during swimming and on filter during the night.

And my really new plan is to sit on the pool deck with my .22 and shoot Japanese beetles. Before they land in the pool. They are b-a-a-a-a-d this year!