Please, help. I don't know what happened!
My red Betta had a full water change on Sunday. I netted him, carefully to get him out of the tank, then I gently poured him back in. After that he was fin. Happily swimming around, sleeping at night.
Then yesterday I bought a heater. Right now he is in a 1/2 gallon tank (small, I know). I got him a 2-15 gallon submersible Tetra heater. He was mad at it, flutterily swimming around curiously. But when I woke up this morning he wasn't swimming around. The water was around 75 degrees and so I figured that he was just tired. But time went on and he just floated there near the top, sleeping. I poked the bowl lightly to see if he was still alive and he angrily swam over to a new spot. Not really showing off his beautiful fins, just ... sliding over there using his little fins. Then went back to sleep. I unplugged the heater. Later I fed him a little, but then he fell asleep, again. Now at 8:20pm I went to check on him.
He is laying on the bottom of the tank. His head on the ground, fins in the air, breathing heavily
through his gills. It's such a disturbing sight and I am freaking out. So sudden! I think he might be hurt. Please please help, he is just laying there breathing. Every time he tries to swim a little he sort of just flops around then falls to the bottom. His tank is 71.1 degrees right now.
Help help please! If you need any more info, I will try and provide it. What can I do? I do not want him to die! He can't just die!
I had been using a heating pad for human backs. It was getting a little fried and so I went and got this in-tank heater. The pad kept the tank at 73 or so degrees.
What size is your tank? 1/2 gallon.
What temperature is your tank? 71.1 degrees.
Does your tank have a filter? No
Does your tank have an air stone or other type of aeration? None.
Is your tank heated? Yes.
What tank mates does your betta fish live with? None.
What type of food do you feed your betta fish? Pellets
How often do you feed your betta fish? Every other day, 2-3 pellets.
How often do you perform a water change? I only had him a little while. So far I changed it once a week 100%.
What percentage of the water do you change when you perform a water change? 100
What type of additives do you add to the water when you perform a water change? Solution made for Bettas for Tap Water
Have you tested your water? If so, what are the following parameters? No N/A