The other interesting thing is that I have some other violets that have been outside in a bit of shade, and although they aren't blooming, the leaves are doing very nicely.

Thanks
Rog

Does the soil remain damp for more than 5 days? Perhaps it holds water too long.
Could be a case of overwatering or even root rot.
My A/Vs in soil like the medium to almost dry up between waterings. Check the roots, if they've started to rot, try restarting the plant by rooting the top of the crown.

C.

Here is a link that might be useful: AV in hydroculture or s/h (with photos)

Promix is mostly peat and with time - it being wet - the acidity goes up. That's probably the cause. If the soil is acid they cannot absorb Nitrogen... here you go...

I would get them out, remove old leaves and pot them in individual appropriate size pots with a fresh soil. You can either leave the gravel on the bottom and wick the pots - so they will be sucking the solution from gravel - or what I prefer - vermiculite. It holds water well and looks neat. You can load enough vermiculite into your fishtank so you can submerge your pots in. I do not think you will need the gravel - just be suure that pots have wicks - and you add fertilizer solution to the vermiculite when it gets dry.

irina

I have AVs in my 90 gal terr planted in 100% sphag over a layer of lava rock. They do quite well -- MUCH better for me than those I attempted in pots outside a terr.

Humidity...makes a big difference - they do not like low humidity we have in our airconditioned or airheated homes.