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Should I be worried?

Subject: Should I be worried?
by jamesde on 3/12/2020 9:45:13

I’ve noticed at the edges of the fins of some danio’s and neons have a white tint to them.

Is this something wrong? Currently one of my danios seems like it’s dying:


Currently having to do a fish-in cycle recently started. Water temp 22c.
74 litre tank 2.6ft long.
Ammonia = 0 (doing daily 25% water changes with Seachem Prime)
Nitrite = 0
Nitrate = 0

Any help/advice would be very much appreciated.