Title sums it up. But Can Oscars handle Blackwater Environment? My PH is 6.0 and probably will hover around 5.8 with driftwood still being added. If the consensus is yes, I'm going to test my luck and keep an Oscar and My Gulper in my 110. I know Gulpers eat most anything with their size, but and oscar will have 1-4" on a gulper and being round fish, one of the roundest cichlids, I was hoping he wouldn't fit in the Gulper Cats Mouth/Belly. Is that even an option?