36 gallon new tank
Nitrates 40 (It's in my well water - have done multiple water changes) Added Seachem Purigen yesterday.
Using Prime and Seachem beneficial bacteria to help cycle.
Purchased 6 guppies and 5 glow tetras, 6 neon tetras and dwarf gourami to start. lost 4 of the 6 neons within first 36 hours. One by one, my guppies stop eating, hide on the bottom of the tank, and eventually die. The first guppy to go had white cottony growth on back of head. None of the others have shown that symptom. One common factor in most of the other guppies that died was the flesh toned (scaleless?) strip that ran from the "neck" to midback - this occurred on the back/dorsal strip of the body.
Treated with Jungle Fungus Clear for 8 days as per the instructions. Didn't seem to help stop the deaths or onslaught. Yesterday was the last day of treatment, I did the suggested 30% water change, put a new carbon filter in (seeded with old filter material) and Purigen pack.
Only the guppies appear to be affected by this. The tetras and gourami (dwarf)
Salt water/blue baths aren't helping - once they stop eating and hiding, it seems hopeless.
I don't have another tank to put the OK fish in to disinfect everything...eeek.