Every. Single. Day. :) I have 5 heavily planted tanks (not NP tanks with soil), and I think of complete destruction all the time. I keep a close eye on conditions, but feel one slip-up or oversight could destroy my lush, green betta havens. It's been a trial and error (a lot of error) education, but so far, last couple months have been relatively crisis-free. Fingers crossed. :)
My Betta Boys: King (King), Marble (HM), Snoopy (Delta Tail).
My Betta Girls: Emma (CT), Lucy (CT), Margie (CT), Thelma (VT), Louise (VT), Dorinda (VT).
Staff: 2 otos, 5 SAE, and 5 Peppered Corys.