I have a 10 gallon tank that i put "Black Magic" brand potting soil in. the pH of the water was normal before i put it in. Everything was setup and my betta was in his tank with an African Dwarf Frog and a Mystery snail. pH now reads 7.8-8.5 and the water has a brown tint to it. Feed my betta live bloodworms and two mosquito larvae. Later he started spasming and twitching only calming to take a breath. i removed him the snail and the frog. Tested the pH and it was high. The snail is back because he wasn't happy in with my female. He is i QT with iodized salt
So did the pH cause this to my betta he also has a scale issue where it looks like he has lint on him.