UUurg! >:( people need the get the d*mn facts on bettas, separate fantasy from fact. Yeah bettas can " survive" in puddles but its the same as keeping a dog in a closet and feeding it one a day. Torture. I will beat anyone to a living pulp if I catch them keeping a betta in those stupid vases with the plant covering the top and argue with me saying they eat the plant roots. At Walmart they have these d*mn tiny 1/3 gal blocks for fish and they are like $14. If I didnt work there Id break them LOL. What also pisses me off is when ppl feed their bettas flakes or floating wheat- based pellets.
FYI not all bettas need heaters. My babies have filters and thermometers but I use very warm water in my tank which is covered with a secure lid to trap humidity. No matter how hot or cold it gets in my apt, their water is ALWAYS 75 F- 80 F :)