Hi, I came back from work today to find my platy and my pleco both dead. Over the past couple of days I have lost 6 Neons and 6 Harlequins also. My tank has been running for 6 Days now and I have added dechlorinator, cycle stuff, I have also done a full test of the water today using the API Test Kit and all is perfect! Temperature hasnt changed and filter has always been running, Over the past 6 days i have done a daily 20% water change and 1 50% water change, added whitespot treatment and also anti-fungus and finrot and still, today, I come home to two dead fish.
Anyone suggest what could be doing this? I think my tank has the Black Death.
Thanks,
Anyone suggest what could be doing this? I think my tank has the Black Death.
Thanks,

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throw it in the bin it is worthless and you will find more use from a chocolate teapot.