I'm a new fish owner, and recently got a male betta as a first fish. He is about 2 inches long, and I got a normal fish starter kit for him, as the betta tanks were TINY! As in, a fourth of a gallon. The tank I purchased is 1 US gallon.
My question is, is that OK? I feed him twice a day (as the food instructions say), test the water twice a week, and change 25 to 50 percent of the water every two days. He seems fine, and the local fish store said it was fine. I have two live plants, an under gravel filter, incandescent light bulb as a heater, and a marble in his tank. The water has some wierd white stuff in it occasionally, but it disappears eventually.
Here's the test results I got today:
Temp: About 74.6 degrees F (not Celsius!)
Ammonia: 0.25, before water change
Nitrites: 0, before water change
Nitrates: 0, before water change
PH: About 6.2
Is that fine?