I know Pacus aren't considered cichlids but can someone help? I have a 90 gal with 3 albino oscars and 3 red belly pacus. All fish were fine for 6 months and had no prob whatsoever. Noticed the water being a little too green ( always have this problem this time of year as sunlight comes thru 2 diff. areas) so I treated it with algae destroyer. Even used LESS than directed. 2 hours later all 3 pacus are dead. Oscars and Pleco are fine? Anyone ever hear of this b4??