Rhyncholaelia digbyana grows like a weed but won't bloom

[Itr_hybrid]

So I have these growing in a 12" diameter pot growing in semi hydro. They grow like a weed - there are probably 50-100 pseudobulbs / growths in the pot. They also appear to get enough light as they are tinged slightly red. However they will not bloom for me. I have had exactly one bloom.

I am wondering if these need a dry period or a temperature swing or something to trigger blooming. My catts these are with bloom regularly.

Culture:
- Semi Hydro
- Watered weekly with Reverse osmosis and K-lyte
- High intensity LEDs (P600 Watt Platinum LED) on for 12 hours a day.

Happy to provide pictures if helpful.

Would love any advice