Water in the leaf joints is not to bad if the water is pretty pure & you have good air movement & it,s in the morning.Generally all said it should be avoided.
My Phrags are in s/h or sitting in saucers about 1" deep , medium is LECA(clay pellets).My pots are taller than standard pots & when i pot my Phrags the roots are just above the water line.
I fertilise very weakly/weekly.I also flush the pots @ least once a week with rainwater.When i water them i really do water them , copious amounts will help to flush any salt build up out.
As for the amount of light i give them it is more than Phals & just short of Catt light( about 2500fc/3500fc.
Do not feel to bad about giving the Phrag a hard time as i have killed a couple of seedlings with incorrect care(pots were to short & the plants were kept to wet).
Temp wise i think they adapt pretty well to general orchid conditions I.E not below 60f.