ccurtis Posted December 22, 2020 Share Posted December 22, 2020 Hello everyone, I was curious on how you guys change water in your larger tanks. I notice that sometimes after a water change, my water gets slightly cloudy for a day or two with what appears to be a bacteria bloom. Currently I drain about a 1/4 or 1/3 of the water, add API stress coat water conditioner to the tank (I dose the amount for the whole tank 125g), then add the water using a python from the sink. Is it normal to get a slight bacterial bloom after a water change? Should I be doing something different? Fish all seem to be fine, ammonia and nitrite are 0 when this happens. Thanks. Link to comment Share on other sites More sharing options...
Jack.of.all.aquariums Posted December 22, 2020 Share Posted December 22, 2020 That isn't normal in my experience. Are you doing other maintenance like gravel vaccing or cleaning your filter? Typically I will only see a bloom from disturbing too much bacteria at once. For example if I did a bigger than normal water change and cleaned my filter at the same time. I don't use stresscoat but I do use API dechlorinater so maybe that's the issue. I did a quick google search and it looks like there are a lot of people that have asked if stress coat causes cloudy water. If your fish aren't acting differently I wouldn't worry too much. Maybe try a different dechlorinater if the cloudiness bothers you. 1 Link to comment Share on other sites More sharing options...
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