Nitrite Spike

[jtirone]

I just did a water change on Saturday. Everything tested ok. The only issue was phosphate. I added Phosphate Sponge to my filter. It did drop the phosphate, but I just lost a coral angel, and my water tested very high nitrites. Is there any correlation between the two, what could have caused this spike. My tank is over 10 months old.

 

[jtirone]

Well, the nitrites are going down. I removed the Phosphate sponge, and added carbon. The nitrites are down. it is reading about .1. it was about .5. It is wierd.
Oh well...

 

[jtirone]

Actually the nitrates stayed constant. I am pretty sure it had to do with the new fish. I added a star and an angel at the same time. I think the system could not handle it for what ever reason. After 2 days, the nitrates went down. I will probably do a water change this weekend.