Phalaenopsis amabilis hybrids - care and root zone moisture.

[MateoinLosAngeles]

Recently, I saw Dustin from Here but not posting about a Phal amabilis hybrid he decided to deflask early since the plant didn't seem to like the constant moisture, even having the roots growing upwards.

I've been personally struggling with some Phal. amabilis hybrids in semi-hydro. The plants seem to do okay but not fully embrace S/H as other Phals do for me. They also notoriously want to escape the pot. I even have some that exhibit the same "upwards growing" of the roots, pretty much growing vertically and upwards outside of the pot.

All my S/H Phals are on heat mats, and temperature is monitored. These Phal. amabilis hybrids are together in an area that reads highs of 78ºF and lows of 70ºF, humidity fluctuations read min of 46% and a max of 68%. Other Phals do great for me in S/H, although the names I have for these hybrids don't seem to have been registered with the RHS, and I can't tell their ancestry. Phal bellina and violacea do great, although I keep them in pots with a pretty high reservoir and "evaporation barriers" in order to maintain their temperatures in the 80s.

I can't see anything on Jay Fahl's website or the Bakers sheets suggesting that amabilis is particularly wetness resentful. The comment seemed surprising given that it's also found in Borneo, and some of those Phals are the most moisture-loving ones, thriving in constant even moisture and heat.

Does anyone have suggestions for Phal. amabilis or a deeper understanding of their relationship with moisture, especially in the root area?