gray fins

I am a little new to bettas but I just have a regular classic all blue and black betta in a well kept 7.5 gallon tank. Recently he's had issues with fin rot, which ive given him two treatments with Pimafix to help cure and hes all but good now, just a little raggety at the fins, but i think...

So, I recently shipped both my boys home and today I received the box. Opened it up, took them out, and started the process of acclimating them to California water, v Oregon water. Acclimation process took about three hours, because I wanted to be careful. It was then that I noticed that some...