I was moving a stand into place and needed to get a 20 g out of the way. I removed about 3/4 of the water from the tank then moved the tank to another location while i switched out stands. After putting the 20 g in the right place, i filled the tank w/ water using a python, while the fish were still in there. I immedeatly placed water conditioner into the tank. THe fish started going crazy, swirling around like they had ceizures. I placed the leleupi into diff tank but I came out with 4 casualties. What went wrong?
Could a sudden Ph kill the fish?
Could a sudden Ph kill the fish?
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