Right now he has a small 2 liter tank. He moves around quite a lot (except when he's resting/sleeping), so I think he needs a bigger tank so he doesn't have to swim up and down and in circles (squares?).
Hopefully sometime in the fall/winter, I'll get him all the things he needs:
filter (probably, heater is the biggest priority because my home doesn't have central heating and sometimes it gets colder inside then outside in the winter T_T)
But I was wondering, how the transfer to a new tank should be handled. What decorations would be safe? And I've heard of some plants that bettas like to nibble on- what are those and could I find them in major retailers?