Coelogyne mossiae problems

[wallyworld]

I am having some trouble with leaf dieback on my coelogyne. I know that this plant is a cool growing plant mainly and the chances of me growing it successfully here in Fl is slim but I want to try it. The plant that I have has 4 psuedobulbs with 2 older and 2 newer. What is happen is that the tips of the leaves are turning brown and has gone back a third of the leaf. The psudos are fine with no problems and I have been told that these plants can be affected by overfertilization. I have been watering at 125 ppm N at every watering and when it started, I gave it 1 watering with fertilizer and have watered just with straight water 4 waterings afterwards in the watering schedule. I have the plant in the shaderoom with fans running right next to it to offset the warm temps I have.

Any ideas?