I have 7 angels in my tank, 1.5-2" diameter bodies, used to be feeding too much (I know that now, reduced greatly last week) However they persistantly eat the hair algae off my filter outflows, and eat strands of flame moss... one died yesterday after being so bloated. Now there is another dead and another largely bloated but swimming about fine, others seem less then bloated but still fat. 0amm 0nitrite 15-25nitrate, 79F...... what should I do?! They keep eating darnit! My outgrow tank is currently overloaded with BGA from neglect an in middle of intense treatment since there are no fish in it right now