Good tips! Although I'm not such a fan of salt, I prefer to use MB. I find that salt can (at least what I did with it) kill my cycle quite a bit.
As a note, most people have bettas in quite small tanks. (2.5-10 gal) I personally wouldn't put an Amazon sword in that small of a tank. (30 gallon is recommended.)
Ah, that makes sense! I have had Amazon Swords outgrow my smaller tanks, but I never knew that 30 gallons is recommended for them. The minimal research I did told me they were good for bettas to rest on, and I went with it because the only reason I have plants is for my bettas' comfort, haha.
I really appreciate the review and will look into updating the information!