190 DT, 60 sump, ~200 gal total. I have had him for several months with no issues. I dose phyto every day to every other day and he seems happy. He is really fun to watch cleaning his tentacles, dipping one at a time into his mouth to lick them off. (yes, I know it's his arse, not his mouth.. but it's more polite to say mouth). I keep a close eye on him and will take him out if he looks like he is turning south, but so far, so good.