The tank was set up about 5 months ago and running a used sponge filter from my shrimp tank and an external top filter.
I don't have any water test kit because it's so expensive right here, but i believe my plants and filters should do the job and I do 20% water change every 4 days
I got 30 gal heavily planted tank
Current fish atm :
7 cardinal tetras
4 bloodfin tetras
3 ember tetras
12 neon tetras
7 platy (including the sick one)
20 cherry shrimp
5 nerite snails
Well, 2 weeks ago i added the neons and 2 of them died from neon tetra disease. One of my guppies have a pretty similar symptoms excluding the red patches about a month ago.