I got my bettafish, Dancer, a new tank with a filter. First of all he hated the filter and swam behind the filter and the side of the tank. I turned the filter off and now he's just at the top not moving and his fins arent all flarey like usual. Does he have new tank syndrome? The i didnt let the water sit long enough! But i added all the declorifier in... What can i do!!?
He may just be overwhelmed and is trying to adjust. When I first got Fernando, it took him a few days to adjust to his huge home and the filter outflow. Did you baffle the outtake of the filter? If not, you should check out the "How to make a filter baffle" sticky. Was the water in the new tank around the same temp as his old water? If not, he may have been shocked. be sure to know the temps and I hope you gradually acclimated him into the new home.
You're welcome, sounds like the two water chemistries where very different. So when you want to add him back in the tank, float his cup in the tank. Do this for at least 15-30 minutes. Then take a very clean turkey baster or eye dropper and suck a little water out of his cup and then replace with tank water into his cup. Repeat for another 15-30 minutes until he can be released. Does your tank have plants and a cave to hide in? Also, do you have a heater? Beta fish enjoy water temps from 76-82 degrees. Any lower then 75 and they become very lethargic. Have any other questions, let us know.