Water temp 79. Divided, filtered on other side, 10 gl tank. He ate tonight. But Necro who never flares is flaring at Torr who loves to flare but isn't. He will flare the beard a bit but then kinda just floats a bit on top. He is seeming lazy and usually he is active. So I checked the water and its all good, levels are all good. What could it possibly be? What kind of preventative steps can I take? I have a small 3/4 th gal that I just put water from his tank into. Now, is that harmful? I was just thinking since his water was good then that would be ok. Is it? Right now he's in a lil cup just to get him away from Necro. Help.