Someone doesn't know what they are getting into more like it XD
As I said bettas were breed for aggression, they ARE AGGRESSIVE fish, they NEED space. Just changing water doesn't change the amount of space they have for territories, neither do plants. Just shooting down people that are already have sororities and know how they work is just gonna make you have a harder time. I hope you can learn to not be selfish and think about the fish...
15 Gallon NPT
1g no tech bowl in the making