Ok so I am not sure exactly what is wrong, but when I got back from my 3 days trip half my fish had lost almost ALL their color and you could see through them..... Everything looks a lot less healthy too. I got them an automatic feeder, but I am not sure if it worked good enough- OR somehow the temp was at 72* when I got home (who knows if it got colder). Then I was wondering if maybe it was because of all the big pwc
They wouldnt eat at first when I tried to feed them either, but now they will and color is coming back a little. I tested the levels and everything is just perfect except my Nitrates are still at 20. What might be wrong? What should I do?