Hello
So first of all, my water parameters:
Nh4: <0,05
No3: 1
No2: 0,05
Ph: 7,5
(edit: not mollie death, i didn't mean to write death but reaaallyy sick molly)
It is a 40 gallon tank with 1 gourami, 15-20 guppies and 4 mollies +occasionall fry that survives
Now i found a relative young black...