Hey there Rob,, guess what??? I have another question for ya!! I am woundering after I glue the new PVC pieces in place how long should I wait till I can fire the system back up and for it to be safe for the fish and corals?, I read the can but would rather here your input on this. Ive got the wall all marked out and it almost seems like that room and the sump was ment to be there, everything is working out to easy, its kinda scary!!!