What is this guys? I've lost 2 fish already, a clown and my flame angel. When I introduced my new fish to the aquarium, I was told that it was too many (ticking time bomb). I guess this is what they meant. I returned some fish back to the LFS, to try to prevent anything bad, but I guess it was too late. Question is, what is this? What can I do.... let everything die? I do not have a QT tank by the way. Some these fish i will post later look too far gone. Will this happen to everything? or? Ammonia:0 Nitrie 0 PH 8.0 Nitrate:100+ (I know this is high, Ive been doing big water changes twice a week). 3 fish are sick currently, 2 died. Everyone else seems ok? maybe foxface showing symptoms but nothing on the outside yet.. i think.