I noticed that my betta had a bad case of fin rot. I used bettafix in the past and realized it was harming their lung and ultimately killing my betta. I bought maracyn 2 for the fin rot, but dosing is very hard for me to figure out. I have a 2.5 gallon tank and the power in each pack is for 10 gallon tanks. How do I dose that out? I can't really measure out powder. Please help I need to treat him asap! Also...his "belly" looks bloated. Is that over feeding? If so how many days should I go without feeding him to be safe? I feed him freeze dried blood worms so y'all know. Any suggestions are really helpful! I don't want my little Thor to die. Please help!