I'm terrified of divided tanks D: My Deimos got over one, into Skittles' side, and Skittles beat the boogers outta him. He never ever got as healthy as he was before that incident. It may mean more tanks to clean, but at least there's zero chance of a fight.
Yeah there is that chance. I glue all my dividers and cover my tanks in a way that there is no chance a betta is going over (although none of mine are jumpers). So far I've never had a problem and I hope I never do.
aah right sorry. whenever i see a petco "delta" i automatically assume it might be HMs (like some of mine have turned out to be). my avatar guy was labeled delta, but is actually HM. don't know why my guys bite.