Did you repot them recently??
Maybe it's just a little bit of stress?? =/

I always re-pot since the shipping potting mix they have in the store is too heavy for them. I use Miracle Grow African Violet mix and perlite in the ratio of two parts mix to one part perlite. Even the bagged mix is too heavy without the perlite. They should be damp but never soggy wet and should never sit in water. Too much water will cause leaves to rot.
I don't fertilize for a while after re-potting since the MG mix has fertilizer in it. It says it lasts six months, but I don't think it does and I begin a weak fertilizer after a couple of months.
If you have a long neck after removing the bad leaves, you can pot the neck down lower and it will grow more roots. Hope this helps.

Morning,

Jon, no, I didn't repot. However, I added a .25 strength fertilizer and Superthrive. Do you think I should have held off w/the fertilizer?

Perle. The soil seems okay..well-draining. Eventually, I'll have to repot though.
I too use MG, but amend with other mediums. Perlite, bark, etc.

Before this last week, days were very cloudy. It was more like winter. I'm wondering if too many darky days caused this problem???? I don't over-water.

No long necks, Yet! :)

Thanks guys..Toni

Toni,

Old-age can cause that bottom row of leaves to die-off. Do you remove the lower leaves as they start to yellow and fade? I do notice on mine that if I don't remove the older ones in time, they will all die off at once.

Linda