robbins
New Member
Looking for a little help. We have a 90 gal tank, fish only. We added two fish about two weeks ago and last week we noticed what appeared to be an external parasite on several fish. We currently do not have a hospital tank to transfer fish. So we treated the tank with formalin several time. All fish seemed to be doing better after the second treatment. However, our Trigger started to act lethargic. He becase worse as the as several days progressed. He has been laying on the bottom of the tank for 5 days very lethargic. He will eat if we place small amounts of food in front of his mouth. What has surprised us is now, he has started to swim around the tank, however he appears to be not seeing well and bumping into the tank sides and structures within the tank. We have tested the water and all apears fine. All the other fish are continually eating and seem fine. Trigger lays on the bottom of the tank all day, durring the evening he will swim aimlessly around the tank. Has anyone heard of Formalin causing blindness or damage to the eyes. If so why would this just effect one fish. Please help if you have any ideas. Thanks <img src="graemlins//confused.gif" border="0" alt="[confused]" />