In fact, I was alluding to your comments on Ich when your log appeared. Those comments have been very useful.

You always give me stuff to shoot for. I would echo Miskairal's "do you do house calls."

Discovered that using RO water for coffee (since the  RO water is so chemically active) requires only half as much ground coffee in the basket.)

Alisa's is an interesting question about plants. As a gross generalization, plants usually do well in clean water which is a little alkaline in pH. Is it possible (echoing some tanks with UG filters) that your water is so clean that the plants are starving? That wouldn't explain why the Najas is doing so well though.

Could it be a light factor? Who has made it and who hasn't?

I never used to be able to keep sword plants (Echinodoris). They would starve for light, getting smaller and smaller...

Since I have increased the number of light fixtures around the place, lowered some of the 4' shop lights to within 6" of the water and begun rotating the (brighter, more efficient fluorescent) T-8s in to replace the (older, more common) T-12s I have been gratified to find better plant growth with several species. Still haven't tried sword plants yet though. ;)

Of course you probably have skylights by now and control them with baffles run by a program on your computer. :)