Ever since i did chemiclean. it did negative effect on my 1 out of 20 fish; green chromie. like 3 month ago ever since i used it, the chromie has being sitting in 1 top corner of the tank, near food dispenser. it still eats but i can see its trying to grab pellets but it misses a lot. I moved him to my frag tank, but same story, he moved to corner where my food dispenser is in frag tank, and sits there. his eyes don't look glazed like some pictures show online. also today i put my hand in water right next to him and he didn't swim away. this makes me think fish is blind.