Water parameters are 0 across the board, pH is 6.5. I just finished treating my boyfriend's betta for Velvet on Saturday. (I treated with Maracide and 1/4tsp. of salt for 5 days.) I decided I'd give him a break for a week in water sans salt and Aquari-Sol as I did with my betta the week prior. Last night I noticed what looked like the beginning of Columnaris on his pectoral fins.


However today the whitish tendrils are gone and there is a halo left around them hardly visible with the eye. Could this just be a shedding of the excess slime coat he developed from the addition of salt, the Chitosan in the Maracide or both?



I'm not sure how to proceed because I don't want to over-medicate but on the other hand I've lost a betta to Columnaris in the past. His appetite is normal and doesn't display any other signs of illness that I know of.
I'll be picking up Maracyn in a couple of hours. Should I also pick up a medicated food as well? I picked up Maracyn, Maracyn II and Jungle Anti-Bacteria Medicated Food.
Thanks in advance.
***UPDATE 11/14/09***
Resumed use of salt and just started my usual addition of salt + Aquari-Sol preventative. Excess slime coat is completely gone. No sign of Columnaris or other illness. Thanks again! 