Newbie1234 said:And before all the plant growth I had 30 ppm in nitrates
Awesome. I’m not totally sure what’s going on since you seem to be doing stuff right. The switch may have just sent you into a mini cycle. I would just keep an eye on it. The best thing for fin rot is water quality. You can also add aquarium salt or Indian almond leaves, but it looks like the tail has regrowrh already.Newbie1234 said:Update:After the water change the nitrite has dropped to zero!