(Fatman's) DIY nutrient mixing guide

Discussion in 'Nutrients and Fertilizers' started by squarepusher, Jun 3, 2010.

  1. MeJuana

    MeJuana New Farmer

    Thanks PuffnNugg and Crysmatic...

    Just if anyone wants a good laugh I mixed up a batch using Calcium Nitrate, not from Cropking, so I added my own salt at 34.5 % purity. That is almost 3 times the levels I was shooting for.. oops
  2. kuz

    kuz Active Farmer

    I just wonder if there is a general guideline for a mixing potassium nitrate with calcium nitrate, think you might want a little K nitrate early on. Also think you might need to increase sulfur slowly, thats why I had a little potassium nitrate in the base and use some potassium chloride early on. Potassium chloride and potassium sulphate both at peak EC. Sorry I cant post any reference's, I'd like to find some. You would question why potassium nitrate makes any difference, N is N to the plant, right? But it is common to see them both used, so maybe there is a reason.
  3. MeJuana

    MeJuana New Farmer

    Re: Why use Potassium Nitrate and Calcium Nitrate

    I thought it was just the ratios you were trying to achieve... Calcium Nitrate is 19% Ca and 15.5% N right? Say I want a different ratio of Nitrogen in comparison to Calcium, now you need another source of Nitrogen so I choose Potassium Nitrate

    Green Leaf Aquariums
    Potassium Nitrate (KNO3)
    13.7-0-46

    So now I am untied from Caclium I can boost N and K at these percentages, if I run out of room on K and I need more Nitrogen, shit now I gotta find another one.. Or rework my chems from the start.
  4. PuFFnNugg

    PuFFnNugg New Farmer

    Some use three or four sources
    A lot just use 2

    I believe that having several sources is a ratio issue. I would think it more important how much is ammonium nitrate. I have wondered the same thing, but different lines get N from totally different sources and they all work.

    Like CNS is Cal Nitrate and Power Plant Ammonium Nit, but they do both have Pot Nitrate, so maybe there is something to it.

    Thanks about the Mg Sul, I was being lazy, at least I found that Lenntech site out of it. Wiki worries me sometimes though it wasn't Wiki that through me off, I forget where I read this garbage. Check that sight out if you need Mol Mass or run any chem formula!
  5. Jalisco Kid

    Jalisco Kid Well-Known Farmer

    It was something I noticed when I had to change up a formula due to lack of salts. I then had a patient run overdrive instead of big bud from week 2 on. He ended up with less heady trics. I usually add K nitrate 2 weeks before flush to pump them up,that and K phosphate. I use DAP 3 times as a floral spray for flavor changes after reading some Indian studies using it. They seem to be pushing the envelope more then other countries. JK
  6. Jalisco Kid

    Jalisco Kid Well-Known Farmer

  7. Seamaiden

    Seamaiden Moderator Staff Member

    Doing exactly the opposite would be fantastic for coco growers. Coco coir is already high in K and sucks up Ca and Mg like a McFatty suckin' on a McShakey-shake.
  8. MeJuana

    MeJuana New Farmer

    Yeah I remember reading a study where taste is actually affected by chemical makeup. Are you trying to bring out more natural flavors or adding flavor?


    FOR ALL: Neat Excel documents for calculating nutrients
    http://www.angelfire.com/cantina/fourtwenty/articles/download.htm
  9. Crysmatic

    Crysmatic Active Farmer

    very interesting JK! like you've said before, the K is what really pumps up the buds. what was your patient using as base nutes? can you give me an idea of NPK he was running?

    i've made (and am using) 4 formulas:
    veg/early bloom: 3-1-4
    middle bloom: 5-4-10 (connie) and 5.5-6.5-12 (connie + OD)
    late bloom: 1-5-4

    from your observation, i should drop OD. i wonder whether in late bloom i should continue with 5-4-10, 1-5-4 or maybe 2-4-10? (hammerhead)

    when and how much DAP do you spray on your plants? how does DAP affect flavour?
  10. Jalisco Kid

    Jalisco Kid Well-Known Farmer

    I used 120 ppm during week 3,5 and 7. It changed my BP from a coffee/chocolate to a chem/fuel smell. I know will try it on other strains to try it on. I saw no leaf or other signs of ammonium from doing this. Overdrive is ok the last 18 days of feeding.
    He was using H&G aqua or Grow More's 3 part.
  11. Crysmatic

    Crysmatic Active Farmer

    0.57g DAP per L will give 120 ppm ammonium, and 133 ppm P. do you believe ammonium in general adds more/better flavour than nitrate? could it be the high P that changes the flavour?

    DNF trace mix has the totally wrong profile. i use 1.35g/L to get my Mo, reduce my Fe by 10%, and add the remaining micros per the recipe (that's how little it contains!). i tried doubling the rate to save myself from adding the other micros...probably not a good idea.

    mejuana:
    http://scienceinhydroponics.com/201...purity-and-its-importance-in-hydroponics.html

    Daniel F probably doesn't read this thread, but i, and several others, have posted questions on his site. if you ask him something, be respectful. use a real first name (not necessarily yours). no overt pot references. he's kind enough to answer questions; don't put him in a difficult postition, or infer that his calculator helps grow ops.
  12. MeJuana

    MeJuana New Farmer

    Crsmatic I just thought it was a little weird, that explains if someone sent an email in my behalf or it was just chance who knows. I wish I was that important!! not

    I do not email Daniel my questions typically I will cross my eyes trying to answer it myself, then I post on a thread like this I am having trouble understanding.. Then yeah if I email him it is without any reference to MariJuana. Certainly a scientist will not help with MJ because he would have no respect from his peers, sad but true. Your are right for sure.

    There is a donate button on his site now, if you enjoy his contributions that is a great way to show the love!! :D
  13. Seamaiden

    Seamaiden Moderator Staff Member

  14. MeJuana

    MeJuana New Farmer

    How is DAP beneficial in Hydroponics it has a higher Phosphorus level for soil crops where the Phosphurus washes away right? It is an outdoors fertilizer by my understanding is that you only use high phosphurus because it washes away from soil crops quickly but in hydroponics it doesn't wash away. Not that you couln't use Dap to adjust the ratios but it doesn't seem ideal for anything that we are doing.

    Edit: Ok I see you guys are after the NH4..
  15. Jalisco Kid

    Jalisco Kid Well-Known Farmer

  16. Seamaiden

    Seamaiden Moderator Staff Member

    Read the paper. There are comparisons not just between functionality/usefulness as a fertilizer, but there are other also other comparisons that take into consideration issues such as manufacturing, raw material sourcing and quality of end product. One's liquid, one's granular (I have MAP, it's kinda sticky, but dissolves easily).
  17. XxShibbyxX

    XxShibbyxX Farmer

    That was an interesting comparison report.

    Even opened perfectly on my phone I'm stuck with lol
  18. Crysmatic

    Crysmatic Active Farmer

    so if we were growing wheat, we'd want to use MAP? if we can tease out any useful info, MAP is 1-4.7-0, DAP is 1-2.5-0. Ripe is 1-5-4, pbp soil bloom is 1-4-5, Aqua flakes + shooting powder is 1-4.1-4.2, maplereef bloom is 1-6.5-3.

    i was running numbers on Sweet, and i realised that it raises Mg by 67-90 ppm (125 ppm peak), and sulphur by 90-120 ppm. i've been aiming for 105 ppm sulphur, while botanicare aims up to 112-155 ppm?! (using ripe as the base). Mg ppm exceeds Ca ppm by a lot...
  19. squarepusher

    squarepusher Active Farmer

    no, i think its accurate, it was an issue of either using different "brands" calcium nitrate (as his default brand is one that is hardly available, and the standard one is near the bottom of the list), and I don't think i was normalizing the potash/potassium. I'd say his calculator is good
  20. MeJuana

    MeJuana New Farmer

    Thanks my friend