Just about starting to plumb my tank. Not sure what to use for pipes. I want to use pvc because it's durable and will last, but vinyl would be so much easier. What should I use. My overflow is drilled with 1"-or 1 1/2 bulkhead can't remember, and I have two drilled returns that are 1/2pvc bulkhead. I'm running a pump on the return that's rated at 780gph, with head pressure that'll be around 600-650gph. Then I'm going to "T" of the return to my refugium. So by the time it gets to the tank it'll be 550-600gph. Any thoughts? Pictures would be great to