Hi .appear to be PH variations. it may also be some extra heat and lack of ventilation but I am more inclined towards the PH. they also seem to be in need of calmag, and you have applied a source of calcium and magnesium to it. good luck mate
hey bro, she is doing fine, ain't she? I really like the fish system, what are your thoughts untill now? I will follow up to see how she goes. Congrats.
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