I have two returns the spa that overflows into the pool and then there are returns to the main pool. On the suction side I have a two spa drains, two main pool drains, a skimmer and a vacuum.
My question is, what is the best set up for circulation? I have it set now for the only return is the spa with water falling back into the main pool from the overflow. On the suction side I have the pool main drain and skimmer open. Is there a better setup?