Computing nutrient mix

Found a good explanation of how to calculate nutrient solutions, but that might be a bit too advanced for now. I think I should start with whatever the common practice is until I've established some baselines. Then I can start tinkering with more advanced formulations and methods and compare them against the baseline.

That common practice appears to be simply mixing Masterblend (in a standard ratio with Epsom Salt and Calcium Nitrate) at a standard proportion per gallon of water. The recipe (given here, for example) is:

1. 2.4 grams Masterblend 4-18-38 — dissolve in 1 gallon of water
2. 1.2 grams Epsom Salt — dissolve into Masterblend solution
3. 2.4 grams Calcium Nitrate (15.5-0-0) — dissolve into previous solution

And note that it's important to do things in that specific order.