My Guppies are dead and Gourami is sick...
A few days back two of my Guppies died suddenly, and another few was swimming just under the surface. I tested the water straight away and numbers were high.
After three water changes and two days, numbers went down to 0 except for the Nitrite which is still between 0 and 0.1. In the meantime another six Guppies died. Yesterday everything was OK, remaining four Guppies swimming happily, and water tested OK (except for the Nitrites, still between 0 and 0.1). I changed the water again and went to sleep thinking everything's gonna be fine now.
This morning another Guppie was dead, other one swimming just under surface and third one has half of his tail eaten away.
Other fishes seems to be unaffected, except for Dwarf Gourami, who's getting all black under the belly and is not eating for two days.
What is wrong? I read, that Dwarf Gourami's can carry some diseases-- is that what killed my Guppies?
I know about Nitrite/Nitrate poisoning (swimming under surface) but the my water's OK now and they still dying... I don't know what to do now... ;(
'When something goes wrong, do what I do-- act normal and pretend that was te plan from the beginning!' - Doctor Who.