Aqua wrote:

inadequate-I had far more plants than I had realized! Tom Barr's latest
recommendations (the Estimative Index) are starting to make a lot of
sense.

What was that (the Estimative Index)?

Is this the one you are talking about
For a 20 gallon tanks I add 2-3x a week:
1/4 teaspoon KKNO3
2rice grain's worth of KH2PO4
5mls of Flourish
and once a week after the water change
1/4 teaspoon K2SO4

That is as simple as you are going to get.
Do 50% weekly water changes and keep the CO2 in the 20-30ppm range.

Yes, that is the crux of it. Tom called it "the Estimative Index" when he
posted it. Here's the original article:

http://fins.actwin.com/aquatic-plant.../msg00594.html

In it he refers to a dosing calculator:

http://www.csd.net/~cgadd/aqua/art_p...osage_calc.htm

Read the article to grok what Tom is saying-he's making an extremely valuable
point.