Planted Tank Guru
Join Date: Jun 2004
Location: Baton Rouge, LA
You'll need to perform additional large water changes, once or twice a day, to remove the yeast.
You should continue dechlorinating the water. Chlorine is too damaging to fish gills. Instead, add 1 tablespoon 3% hydrogen peroxide per 10G of tank capacity after each water change. That will help kill off some of the yeast. And also has the benefit of adding oxygen to the water, which the yeast are consuming.