Growing Things: How to deal with browning peace lilies

Q: Thanks so much for your help with my deer/cedar problem from a few weeks back. I am now wondering if you might have a solution for the browning on the edges of the leaves of my peace lilies.  I got them as a birthday gift in August of 2023, and they were doing well at first.  However, some time ago they started to develop browning on the tips and edges of the leaves.  Also, they have not bloomed for some time.  I recently added LED grow lamps as they were probably not gett