Thanks again for the reply!

I should have clarified... Currently, since my R/O unit hasn't arrived
yet, my GH is at 10, and my KH at 6 or 7 or so. Perhaps Boron is my
culprit? I'm going to dive into these articles now... thanks very much
for the links!

By the way, I should add, that some of my plants are doing really quite
well... My dwarf aquarium lily, for example, has easily quadrupled in
size in 2 weeks...

I'm going to jump into these articles now. Thanks so much for the
links!
-Wes