My pool has been gunited and my PB is getting ready to put in the equipment and piping. Most of my plumbing is 3 inch. I get 3'' plumbing for main pool pump, skimmers and returns (returns are 3 inch plumbing to pool and then split into 1.5 pipe and fitting through wall); My Grotto spiillover pump, the SWF 185, has plumbing which is 3 inches on suction and stub return. All returns are home runs and all the piping between the equipment is supposed to be 3" piping (excluding the SW125 pump (for the Grotto jets and Laminars) and the polaris line).
My question is I see that the contract states that the main drains (there are 2 sets of these -one for the main pool pump and one for bothtthe grotto and Laminar jets) are tied into the deep end skimmer. Note that I have 2 inch flex line inside the Gunite shell). I have a feignt recollection that someone said not to tie in the main drains to the skimmer beause it makes it harder to detect leaks. Are there other reasons? Is this a big issue? Should I ask them not to tie the main drains into the skimmer? Would this be a big cost for them?