I am upgrading my pool with a new Pentair variable speed pump and an aqua-rite 40k cell Chlorinator. I am planning in predominantly be using the pump at a very low speed for a long time. I will be changing most of the connections due to poor design. I was wondering if is wise to upgrade my pipes from 1½ to 2”. My copper underground pipes going to the pool are 1½ inches and cannot be upgraded. Since only my above ground equipment connecting pipes can be change, is it wise to upgrade to the bigger size? Specially, since I will be using my Pentair variable speed pump at a very low setting.