Where I live the tapwater is usually Ok and not high in chlorine, however if they find a bacteria in a test they ad lots of chlorine, to the point it smells like in a puplic pool. One change with that water would seriously harm my fish.
If we can rule out chemical burns I would look for heavy metals like copper, is your tapwater safe to drink ? They can cause irritation und scaring of the gills.
Another thing could be simple stress, you have a bare tank with not a lot of space.
Is everything alright with your filters ?
How hard is your water and what is the pH ?
I would treat a bacterial infection with tannins and as high of a temperature as possible.
Parasites can be treated that way aswell, but not all of them.
So it’s better to make a test on tap water to be sure.
Yes the tap water here is ok to drink.
So I should put sand and some driftwood from now or better on the new tank?
My ph is 7,4 and my dgh is 11.
What do you mean by treat with tannins? Using catappa leaves? 29 Celsius is ok to go? Or higher?
Sorry for the many questions and thank you so much once again for helping me.
