Brown tips on Phcal (Phaiocalanthe) & Ground Orchids

[mclyle]

My Phcal (Phaiocalanthe Ursula Kryptonite Burgundy AM AOS), and my ground orchid in a pot, have developed brown tips on each leaf. This morning I used a clean razor blade to cut the tips of my Phcal (see pictures). What could be the cause? Should I now coat the edges where cut with cinnamon or some other fungicide? I've never had this problem with these soft leaf orchids. Thanks, McLyle

[King_of_orchid_growing:)]

How often do you fertilize and how much fertilizer to water are you using?

[Tropic]

I think this looks very much like a fertilizer excess or imbalance problem. I have had no problem with the Phaiocalanthes, but definitely with some Phaius and Spathoglottis plants.

[Gin]

Nice big plant ! I agree looks like from Fert. I would flush the pot well to remove any build up .