loosing fins dark "mold" on fins

[klswind]

sick since 10/6. treating w API Fungus Cure and API erythromycin per instructions. still loosing fins and dark "mold" increasing. eating, active.

[Canuck Fins]

That's tough. Can you tell us more about where he's living? How big a tank, water changes, tank mates? Is this his first illness?

[klswind]

wow thanks for the fast response. a year old, first illness, just posted info and pix of tank on the site. it's an Eheim 4 gallon sponge and biofilter, lighting, an unadjustable heater (just got it when he got sick - tank may have been cool but he was always so active, bubble nests all the time, eats so i never worried) keeps it 74-76. 1/3 water change/week. Since hes been sick have him in a one gallon now w/heater, treating and changing the water 100% every day for past two days. treating and 90% twice a week before that since 10/6. first couple of days he wasn't even moving then perked up, became active again, small bubble nest, eating but the fins are still really falling off and the dark "mold" increasing on fins.