RO Reject water project

Well, I made it all the way around the equipment room.  Now, I need to decide how it is going into the holding tank.  I also tested the pvc out today.  It did not leak which is good.  It did create a siphon which wanted to drain the tank which is bad.  I think I am going to drill a hole in the hose that connects the sump pump to the pvc.  Greg, also thought it was a good idea.