Melonbob
Reef enthusiast
Ok, I'm looking at my new setup, and I'm noticing the bulkheads are either 2" or 1.5", but then they reduced it down to 1", maybe 3/4" (sorry, I'm too lazy to get a tape right now. Anyways, I'm guessing they did this because they had originally planned on running the mag 9.5 and didn't need large plumbing. Anyways, I plan on running a mag 18 or comparable (if any of you have suggestions on pump brand) and I'm wondering how big my lines need to be to get the 1800gph required out of my drains. Thanks!