1 thing i can see is that there is not a big difference between day & night temps.Phals require a good difference in temps(well the hybrids do) between night & day to iniate spiking.
Also what about fert use ?
To much can cause no blooms .
Bud drop can be caused by many factors , a sudden change in temps/humidity will make the buds drop off very quickly.
Light is also a major factor , i grow most of my plants with as much light as they can take(& a little more).I have some burned leaves & Phals with a good hint of yellow in their leaves but most of my plants bloom well.
I don,t bother with bloom & grow fert.I actually blend the 2 half & half but i do feed quite lightly but regularly.