Okay 55 gallon tank been up and running for almost 5 years, now all of a sudden I have started to see bristle worms and there are more of them than there is fish or l r in the tank and my zoos aren't opening as much as they usually do, any ideas why??
Nh4 0
No2 0
No3-n 7
Cal 460
Ph 8.1
Kh 10...