Phalaenopsis petals didn't unfurl

[sunfire]

I have 2 NOID smaller form phalaenopsis where it seems the petals are not going to unfurl.

Background- plants were both nearly rootless a year ago due to my ill-care (inherited from my aunt in good condition). I didn't really want them to die so I fortunately found this site and firstrays and transferred to SH using monthly kelpak/Quantum-Total and other times MSU rainwater formula at around 50ppmN or just straight rainwater. Spike was initiated early winter, moved inside on top of a heatpad and under growlights. I was excited to see the flower for the first time but the petals aren't fully opening. The sepals are nice though. Same thing on both plants. I didn't know they were going to be identical and I don't know anything more about the plants history.

Curious if anyone has seen this? I found this other post with a similar problem but that was attributed to old medium. My roots are doing well as shown.

My only thought is maybe the grow light is too bright? It measures about 1200fc at leaf level and I had it on for 10hrs earlier and recently reduced it to about 7. I do have some purple coloring on some of my other phals in the same area. I don't have any pests or other diseases as far as I can tell.

Just curious if anyone has any thoughts.






Below is the first bloom of a larger phal in the same area without this issue (just opened). This plant did bloom last year (was in sphag but in better condition and I transferred to SH at the same time as the others).