Burning leaves on NoID Phal.?

[LoveOscar]

I bought a NoID large Phal. from Lowes on clearance, missing most of its flowers. Until I fix my window treatments, everything is getting limited light from a southern facing window. So, some things, like my seedlings, are under 6500k grow lights. I placed my 3 Phal.s in front of the tank holding my seedlings and grow lights, hoping to get them some extra juice. And so far so good, the mini's look fine and have lightened a bit in color.

The big Phal. however is getting dark red lines around the edges of the leaves. Is this burning? Do I need to give it less light exposure until it adjusts?



Thanks for reading.