I picked up a pair of these guys ( I hope it's a pair ), a couple of weeks ago. They seem to have settled well into a 20 gal. long. Tankmates are (4) 2" bristle nose plecos. PH 6.8, GH and KH is about 3. I have read that PH could be a little higher and they are vegeratians. That's about all I could find. Any other tips??? Thanks.