your chart confuses me, mind explaining it a tad more?
Sure. I made the chart so a grower can try various combinations (in terms of application rate) of the listed fertilizers to find what they think is ideal for their plants, in terms of elemental ppm, total ppm, ratios of 2 elements and relatively of 3 elements (ex., K|Ca|Mg).
Ex., one could add up say, the ppms from 6 ml GH Micro, 5 ml GH Grow, 8 ml GH Bloom, 2 ml CalMag+, 3 ml ProTeKt and 1 g Epsom salt (or other iterations thereof); and then find ratios, etc. All the fertilizers need not be used; ex., one doesn't have to use ProTeKt or Epsom.
In that screen shot the blue highlighted columns are my current test mix (re application rate per gallon) and the relevant ppms of elements from the fertilizers at the listed application rate. The green highlighted columns under "Totals (ppm)" list the total elemental ppm of my current mix, when all ferts are added together. The green highlighted columns under "Ratios (":1" is assumed)" is the the 2 element ratios (ex., NO3:NH4, NO3:S, K:Mg, etc.) as well as 3 element relativity (ex., N|P|K and K|Ca|Mg) of my mix as compared to the same from the pH/Lucas mix. The orange highlighted text/numbers is the total ppm of my mix per element as compared to the total ppm of the pH/Lucas mix per element.
My current mix follows:
- 5 ml/gal GH Micro
- 5 ml/gal GH Grow
- 7 ml/gal GH Bloom
- 5 ml/gal CalMag+
- 2.5 ml/gal ProTeKt
- 0.5 g/gal Epsom salt
Did that help explain the spreadsheet?
yes! explained it very well actually! curious why you use epsom with cal mag...
and you reminded me of fulvpower, have to grab some of that today....
and with that amount of calcium, you don't have have phosphorus lockout?
I use Epsom salt to increase Mg and to reach close to my goal K|Ca|Mg of 3|2|1, as well as my goal K:Mg ratio. Also, the extra S is welcome because S can be a bit lacking otherwise.
FWIW, a buddy told me he found the source of GH Flora Series ferts; the company that GH buys from wholesale and relabels under the GH brand. Buying from that company direct saves a good bit of money my buddy told me. I am not 100% sure he is correct about his claim, but I have no reason to doubt him. I plan to call up the other company (not GH) on Monday, and ask if they do indeed supply GH with their Flora Series wholesale. If that is the case I will order Micro, Grow and Bloom from them and have it tested at a lab to verify label claims. I would prefer to save some money on ferts if possible ...
I add citric acid to lower pH which will also dissociate P-Ca into P and Ca (as soluble forms of those ions); as well as help prevent formation of P-Ca in the first place.
citric acid? can you explain, im finding this very informative.....
also, is your chart for all mediums, or what your working with?
Nice looking profile spurr...
Are you boosting it at all?
What do you think of dropping micro at week 5 and doubling the Epsom?
Sure, but not right now. I'm hungry and got some watering to do. I'll post soon
For now, here is some info on citric aid you may find useful relative to this thread.This is info I have posted at ICmag before: "citric acid"
The chart is for all mediums, yes. It has been tested in ProMix HP, SunShine Mix #4, Coco/Perlite (currently being tested), and my custom soilless mixes with peat, aged pine bark fines, calcined DE, vermicompost, etc.
More later ...
@ Kruch,
Do you use soilless media or some sort of water culture? (I ask because citric acid as the sole pH down seems to have greater flux in water culture than say normal pH down, ex., P-acid).