Ok so in my 12 gallon planted tank i have 5 rummy nose tetras and 2 blue ram cichlids and about a week ago i notices a couple white spots on only the rams then about 3-4 days later they were all over them. Today i looked at them and all my fish have the white spots and the rams fins are starting to look like they have his cotton stuff on them. I just put some pimafix in the tank what else do i neeed to do??!!???!!??!!??!!??!!??!!??!!