desertsquirrel
Member
The P2O5 is 120 ppm, but actual available is 52P because P is only uptakeable in the form of HPO4. But i could be wrong, i have never used jacks.
Where did you find this method? I would love to try this with some stuff I have laying around... lol any linkage to a step by step? I tried searching pipedream and got error message ...
75 micron sieve? where on earth do you people find this lol
hi, desertsquirrel! thank you!
From what i understand the npk on the bottle is total (being 120) but actual available (52) is HPO4. No?
lets do the math and find the actual ratio for the NPK ratingjj, i hate to keep referring you to links but they do a better job of explaining this than i can.
150-52-215 is 3-1.04-4.3. that's awfully close to 3-1-4
http://en.wikipedia.org/wiki/NPK_rating
P2O5 and K2O are not available.
43.6% of the total P (P2O5), is available P (HPO4--).
83% of total K (K2O), is available K (K+).
Think about it, how can the 43% your taking as the available be more the then total your taking the 43% from?
so i bought a bunch of botanicare bricks. i know someone here has used it before. maybe they can report their results with it.
with all due respect,jj, i personally have never done the math on this, and really don't intend to as i trust jrpeterslab on their product. they claim 150-52-215 when mixed according to directions. i'm inclined to believe them as they are a working plant lab with a lot of large commercial clients.
i know that i am growing large beautiful plants at high speed so it seems to be a good ratio.
have you seen the cannastats site?
http://www.angelfire.com/cantina/fourtwenty/
there is a nutrient calculator there that might help you.
also there are recommendations from the old pot gurus as to proper npk for weed. but remember these were made long ago without the benefit of tissue analysis.
you might consider talking to jrpeters staff about this.
later, d9