I just recently started a betta sorority. I had the tank set up for about a month before adding them and used a sponge filter that was already established from a different tank. I added 6 juvenile guppies (from an already established tank)2 weeks before adding the bettas. My parameters are
Nitrate-0
Nitrite-0
GH-25
Chlorine-0
KH-180
PH-7.8
Amonia-0
So here's the problem, the gills on the bettas are all turning red, which I looked up and it said amonia burns/poisoning but the levels are 0. The tests aren't expired as I just purchased them. Please help!!