JohnT Posted September 10, 2021 Share Posted September 10, 2021 Hi folks. I've a community 45g tank where I have 3 Angel fishes among others. I've noticed since about 2 weeks ago that my angel fishes aren't swimming around as they used to. They mostly just stay still around the corners of the tank and vertically on the middle. I've measured ammonia, nitrate and nitrite and all is low. However, I'm sure there is something going on as the smaller angel fish died one week ago and this night a male sword tail fish died. Any suggestion what this might be and/or what to check? I'll measure all parameters today again and do a water change and post the results here later.. Link to comment Share on other sites More sharing options...
quikv6 Posted September 10, 2021 Share Posted September 10, 2021 Ammonia and Nitrite should be zero, ideally. Nitrates should be measurable. Any level of ammonia or nitrite can cause varying degrees of stress, illness, or worse. If you can post specific parameters, including GH, KH, and PH, that may significantly help point towards a potential culprit causing the issue. Also, please let us know how long the tank has been set up and operational. Link to comment Share on other sites More sharing options...
BrendaW Posted September 10, 2021 Share Posted September 10, 2021 You mention that your ammonia, nitrites and nitrates are low. Only your nitrates should be low. The other two should be zero. 1 Link to comment Share on other sites More sharing options...
JohnT Posted September 10, 2021 Author Share Posted September 10, 2021 (edited) Parameters: - pH: 7.6 - High Range pH: 8.2 - Ammonia: < 0.25ppm - Nitrite: 0ppm - Nitrate: < 20ppm - KH: 3-4 drops - GH: 7-8 drops Looks like the problem is the pH, what do you think? I ran out of CO2 and the pH raised a lot. This tank has been running for about 1 year now, just recently I started having problem; right about the time I ran out of CO2! Edited September 10, 2021 by JohnT Link to comment Share on other sites More sharing options...
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