So I don't know about all yall smarty pants reefers, but I'm very loose on my general assumption of how much water I have. Currently I have a 120g display upstairs plumbed to a 36g fiji cube in the basement that is drilling to overflow into a 40g breeder that stays around half volume which has a reeflo pump drilled into that pu.ping water back upstairs. So I think I'd say I have somewhere between 160-180gallons total water? That being said, I bought a theiling roller mat off brs now that it's being discontinued by them.. mistake? Idk but it was less than 100$ and I read i can use either coolant filter paper OR buy the 8" trigger mats, cut them in half, and build a new spool out of pvc so we'll see. That being said, I have read slightly smaller is better than too big with skimmers. So with a roller mat and a skimmer should I invest in a 150g skimmer? Or maybe go even smaller? I really like the reviews I've read on reef octopus so feel free to even include the model size you'd recommend. Thank you!