Hi Natalie:
It is a ten gallon tank. The Maracyn box says add 1pkg per every 10 gallons, every 24 hours.
It was her first time getting a pea treat. She likes to eat out of my hand, so I just held the small piece for her & she gobbled it up. I only gave it to her the one day. I'll give her another treat today.
I wish I had a fish vet to take her to.

I would feel so much better if a doctor would look at her and say, "Oh, she definitely has _____. Just follow these directions and she'll be fine." Wishful thinking!!
Thanks for taking time to respond to my post. I haven't even told my friends that I'm depressed about this dopey fish...few people would be able to understand that they have a personality and become a part of your life.
Wendy