i bought 20 neon tetras and added them into my 2ft tank on thrus. in a haste i forgot about the overload of the nitrogen cycle and hoped that it wouldnt be that serious.
yesterday i saw one neon gasping for air on the surface, next my sae dies. today, another neon to the dead list.
i immdiately took a NH3 test and it showed nothing. i didnt feed them yesterday as a safety measure. my conclusion is that the bioload is overloaded and it may have excess No2 in the tank now. i did a 20% water change. what should i do next......?
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