Angela, I really don't know. I don't use K-Lite and have no idea what's in it. Also, I've never used Orchiata. Over the last year or so, I've used mostly Miracle Grow 24-8-16. I was overfeeding calcium when I used stream water AND I was adding Calcium Nitrate to my fertilizer solution. The stream water contains calcium as the stream flows over numerous limestone rock rapids. When I realized what was wrong, I continued to use the stream water; but, I completely stopped using the Calcium Nitrate. Now, I'm back to using R.O. water for daily misting and spot watering; but, each bench gets watered with stream water about once a week. The rest of the time, I use the R.O. water and because I still use stream water for some of the irrigating, I never use Calcium Nitrate any more.
If K-Lite has calcium in it....and/or if Orchiata has calcium added to it, then maybe too much calcium is what your fischeri is not happy with. I am assuming that your water is not loaded with calcium. If you use well water, it very well could be.