So I want my spray to have the ppm of each of the elements listed above, but on the high side of the range?
To be specific, do I want the spray solution to have the following:
NO3: 30 ppm
K: 30 ppm
PO4: 3.0 ppm
Iron: 0.5 ppm
And does GH really matter for this spray solution?
(Thanks for all your help!)
You got it!
We simply want water with those nutrient levels.
Yes, GH does make a difference.
When we hear GH in this hobby, most people refer to magnesium and calcium. Many boosters also have potassium. So why do they use it?
We all seem to forget that GH is a measure of divalent metal ions. Yes it includes magnesium and calcium to a large degree. However, potassium, iron, sodium and manganese are also divalent metal ions. Each one being an essential nutrient.
The only reason I pointed this out, is to demonstrate importance to know the constituents that actually alter GH.
"My tap has a GH of 6. is that enough?" Answer is usually yes. However, in reality GH alone is a poor indicator of elemental components.
What's the answer to ensure we have adequate minerals that make up GH?... Dose them! Many forget that the EI method includes GH booster.
Sorry for the long explanation. Sometimes my fingers get on a roll with the keyboard lol.