Need advice.
My fishes all died overnite recently except 1 hawk fish.
Changed water & added new stocks but died after 3 days.
Before the 1st batch died , i accidentally overdosed iodine & iodate, twice the recommended.
Need to know whether this resulted in iodine poisoning.
When they died , can see their skin having furry or slimy stuff.
Could it be also parasite attack ?
Currently having octazin treatment.
Need advice on how to treat problem
Many Thanks