Beebe
Aquarium Advice Apprentice
My boss has a 55 gallon tank. Just recently he did a 70 percent water change I told him this was too much water to change all at once when doing the water change he added about 6 teaspoons of aquarium salt to his water the next day is tank got cloudy half of his fish died. The next two days after that A clearish Brown mucus begin to form on the bottom of his tank now it seems anytime a fish touchs this mucus it dies within 24 hours. Help we are totally confused and baffled by this development and have no idea what this could be. Pictures to come in the future just looking for ideas right now