K-Lite has been around a few years now... updates?

[Leafmite]

I think the choice of fertilizer really depends on the medium and type of water used...and perhaps what you are growing. There is no perfect fertilizer...just what works for you with your conditions and your orchids.

Kelp, though, is really widely popular in all aspects of gardening, now, as the results are said to be really good. I have not tried it but may need to do so soon from all that I am hearing.