Those "tank dividers" you get @ Petcosmart are HORRIBLE! They keep spoinging into a roll. They wouldn't keep 2 baby guppies apart, let alone determined bettas!
This board needs a product "thumbs up" & "thumbs down" thread. It would save new bettas owners $$$! I mean, how much worthless junk have we bought only to throw it away b/c the receipt expired/disappeared? (P.S. there is a receipt-stealing elf roaming the planet!!!)
4 bettas: Butch, 3-year-old violet male PK EE & 3 girls in a 30 gal sorority. I do not name the girls anymore! 1/2 of them die within a month.
30 gal: 9 Oto cats, 4 Ocellifer cats. Inverts: Cherry shrimp & 2 assasin snails.
10 gal.: Butch, his 5 oto cats, 3 assasin snails, and a few snails the assassins haven't caught.