Hello! Just in case any of my Betta's get fin rot in the future or sick i would like to have some aquarium salt on hand. I went with my parents and checked the Petsmarts and Petcos in our area and none of them had it! Does anyone know any websites that we can buy it from? I know this idea is very wrong lol but i just want to make sure that i am right. I am also a owner of two hermit crabs and i have hermit crab salt for them. I know i shouldn't use it on Betta's right? But more importantly if any know somewhere or a website that i can buy the salt please tell me :) Thanks!