Need help getting my 29gal going again

[homebrewdude]

I used to have the following setup, and had great results until we moved.

29gal, Led light fixture. False bottom with a waterfall down the sidewall.
Growth was great, lots of blooms, but had to sell when I moved.

Bought another 29gal and have the same light.
Do LED's go bad over time?
I built a false bottom again, but this tank has no water feature. My orchids are basically dying in the tank.

I am thinking I need to up the humidity, I cant always mist everyday, sometimes once a week.

Any suggestions?