I have 2 armatus in a 125 at 4 inches. normaly they eat like crazy but there starting to slow down on eating and are starting to nose rub. my tat did this befor but I dimmed the lights and he stoped. I did the same for them and they wont stop even with dim lights. the woont stop till the lights are off. I have a thing of driftwood in there that they like to hide behind. the tem is wam and like in the 80s or alittle more like 82. I do water changes 2-3xs aweek at 30%. There in a totaly dark room so they dont see me when I come in and spook them, this will change once they get bigger Ill oppen the blinds once there about 6 inch. can some one help give me some Ideas please. these fish are my babies and ive kept tigerfish and other payaras and they normaly stop when I do all this.