I can't find anywhere on the internet that sells 1-3 gallon tanks (suitable for bettas). I want to start getting more bettas but can't find small enough tanks. Can anyone recommend any in the UK?
The new Aquaone range is full of all sorts of small glass tanks, they're not that expensive either (cheaper than standard glass rectangular ones, anyway).
I realize that your not in the U.S. however, I might go to the grocery store or warehouse grocery store that might sell such things as cheese balls or other snacks in a large plastic container. Here are a few containers that I used last year for temporary betta homes, they each held about 2 1/2 gallons of water and my bettas seemed to love it. I wish the best on your hunt, Merry Christmas from the states.
The water that surrounds the heater should be able to disipate the heat sufficiently to prevent the plastic container wall from deforming as long as the heater doesn't have any direct contact.
I had my bettas in them for the warmer months of the year, the water stayed around 76 degrees so I didn't need a heater at the time. They worked great until I was able to get a better home for them and a heater for the Winter months. Ya they are quit thin but they hold up quit well.
I have a kenwood water filter...old silver one and I kept a betta in there for weeks. I put a bit of gravel in and a plastic weed. There was also a lid with a hole to fill the filter up direct from the tap so it was easy to feed him. I named the betta Ken..he was a rescue..I had him a while until he succumed to his maker.