Must have had something die under the rockwork but came home to cloudy water. Fish are gasping so I assume I have high ammonia but don't have a test for it anymore and all the stores are closed. I read a few articles that recommended only treating the ammonia spike and making sure the water stays oxygenated until the bacteria is starved out... My question is, can I do more harm by using too much erase-cl to try to neutralize the spike without knowing exactly how much ammonia is in the tank?