link to nutrients http://www.progressive-growth.com/hy...tom_recipe.php

I'm going to use two 5 gallon reservoirs, one for each two plant setup, instead of a 10 gallon reservoir for one four plant setup. Not counting the flush cost or the shipping, I've figured it'll cost $41 for the nutrients from start to finish for each 5 gallon setup.

Does the nutrient chart take into account how many plants are growing? Does it matter? As an example, would the nutrients work differently if it were 6 plants in a ten gallon reservoir as opposed to 4 plants in the same reservoir.

btw-the TDS meter that cost $25 fell completely in the water. Got goofy readings so I dried it out and it looks to work okay. I ordered a waterproof one to be safe. How can these meters NOT all be waterproof?!

Thanks in advance for your answers.