I am finishing my basement. There is a pea gravel cut-out in the concrete slab with a 2" cell core sch40 ABS stub. I have 3 questions:
#1 - I was going to use a sch40 PVC tub drain/overflow set; can I connect to the ABS?
#2 - When I remove the cap on the 2" in the pea gravel cut-out, will there be waste water?
#3 - Do I refill the cut-out with the pea gravel once I'm connected and the tub is in? (I will have access thru an unfinished room)