Aquarium parameters: 5.5 long, with a sponge filter rated for 10 gallon. Inert gravel. Temp: 78F (fixed temp thermometer), ph: 7.0, ammonia: 0, nitrite: 0, nitrate: 0 (all tested last night). Due for the weekly 20% water change today. IAL and a ton of tannins in the water. Each water change gets Prime to declorinate, 1/4 dose (not the full recommended amount) of BettaFix, Flourish and lately one week of Stability because I am moving things and I wanted to make sure the bacterial balance wasn't harmed. Once a month I do a 50% water change and he gets more aquarium salt along with the above. Every other week I switch out the IAL. I have done nothing to this aquarium all week but feed, and talk to him. Tank mates: 2 nerite snails, Anubias, crypto, peace lilies (hydroponic ) Food: Tetra Betta Floating Mini Pellets, 2 pellets 3x/day; Frozen brine shrimp 1x/week. OK, I will post pictures when I get home, but checked in on our betta this morning to see that he had single raised white dot on one pectoral fin--looks fungal to me since it seems a little fuzzy, but from reading it could be velvet or ick? I had to go to work, so I couldn't treat him this morning, and he was acting just fine--dancing and begging for his food. I can stop off at the fish store on the way home and pick up just about anything, so should I treat for all three? I can get an adjustable thermometer, dose with the FULL BettaFix dosage, and do a 50% water change. (And I guess pick up a new vacuum hose for his tank so I'm not using the same one for both of my aquariums). The trouble is that I'm seeing conflicting information about whether I should do a large water change at this point, some things on how BettaFix isn't the cure-all it claims, if I should jar my betta while treating him, etc. I'm also concerned for my snails--if it's ick the entire aquarium should be treated, and I can't find any information on the full dose/prolonged use of BettaFix and nerites, and I know they won't appreciate the temperature change or extra salt. Any advice?