20g, amm-0, nitrite-0, nitrate-5ppm, lots of fast growing plants, Mopani driftwood, heated to 78f, hob, play sand substrate, 40-50% water changes weekly. Mystery, Nerite and Rabbit snails.
I added a Betta 3-4 weeks ago and he started glancing. I removed the snails to a 10g quarantine tank and treated the Betta with API General Cure for two weeks. He stopped glancing and passed what looked like a tape worm. After the 2 week treatment I put the snails back in the Bettas tank. Next day he's glancing again. What do you think the problem is?