Hi all,
I have a lil flame dwarf gourami who has been weathering a few issues. He was previously in a 10g tall with 10 neons and a rubbernose pleco. (tank 1 parameters: pH:7.5ish, nitrites <0.5ppm, nitrates <20ppm GH/KH:180).
My flame dwarf gourami developed columnaris. I found this...