Originally Posted by charr8
He is in a 1.5 gallan tank. Not sure of the temperature. THe pet store said just to put luke warm water in. Our house is cool-warm.
He has a little light from the tank but it doesn't put off any heat. Not sure of the PH. We are on well water and I put in the anti-cholorine stuff in it.
Should I turn the light off at night?
I'm sorry, it seems that you were the victim of bad pet store information. To start, bettas need a heater to keep the water a constant 78-80 (optimal temp.) Also, the minimal tank size requirement is 2.5 gallons although larger is easier to maintain and benificial to your fish. With a 2.5 or larger tank, you can also get a filter to help with water quality. Also, you really need a test kit that will give you readings for ammonia, nitrite, nitrate, and pH. I also suggest that you read up on cycling aquariums (even if you do not plan on cycling, which is the buildup of benificial bacteria to process fish waste, it is still essential knowledge).
Yes, you should turn off the light at night. Fish need a normal day/night cycle too.
How long have you had your betta? It could be that he is having trouble adjusting to his new home. Does he appear to be scratching himself on anything when he has these "spasms?" Does he look like he is covered in gold dust or show white spots? Can he see his reflection and is he flaring his gill flaps and fins when he does it? Just trying to cover all the bases.