Micro algae fern dying

[sharky79]

I was out of town for a few days and my sump light went out for a about a week without my knowledge. I now have a new light 65w LED daylight bulb 5000k back in and my ferns look very slimy and or transparent. However there is a lot of green leaves left, but even they look bad. Should I just replace the ferns or wait a week to see if they bounce back. I've had these ferns for over a year and they propagated very well for friends of mine who wanted ferns in their sumps. I never dealt with this issue before.

 

[Big G]

Bump