First time with sansevieria in the home. Got them primarily because of the low water needs and put them in rooms that aren't frequently accessed.
How should I water them? What I've read online suggest anything from every 2-3 days to once a month. Have one in a dimly lit basement room with slightly higher humidity and warmer than the rest of the home and it seems to be doing fine. Another was in a brighter, drier room which isn't doing too well. A couple of the leaves have what look like dry tips, and one or too that have wrinkled, darkened and feel dry and thin. One of them has also become limp.
I've barely watered them. The soil they're in is very fast draining. As soon as I pour water over the top it starts to drain out the bottom. It looks like some bark, perlite and maybe a little peatmoss but it's mostly large particles. The next day after watering the top bark looks dry. Keeping a moisture meter in it and by the next day after watering the needle goes down to dry.
How do I keep these plants healthy and will the damaged leaves recover at all or do they need to be pruned?