Can you link me to info discussing not using microbes in solutions with more than 20ppm of P because I've been using microbe teas for years in hydro and never had my P that low. so if I'm doing something wrong, I'd like to know the "why" so I can make any needed changes.
Also, I just started ramping down my use of amino acids. I use the granular AAs from Kelp4Less but have noticed a slow down in growth overall throughout my crop over the course of months. Through various adjustments of various components, I am near certain the culprit is my AAs. After looking up
Amino Acids (in wiki), you'll see that the form of N is -NH2. I'm still trying to find out if the plant can use that molecule. Daniel Fernandez made a nice
BLOG ENTRY about the questionable reputation of Aminos and I am forming the conclusion that AAs are more useful to treat plants out of stressful events, but not so much for a constant use. So previously, I used to add 6 quarter TSP scoops in 10 gallons of res, then 4, now I'm taking it down to 1 scoop for the res. I mix all of my powdered/dry organic products in the beginning, so the gypsum, yucca, fulvic/humic/kelp blend and the AA, and with a little water in a screw lid jar, I shake the bullshit out of it all when making a new res. This way the Ca will have some residence time with the AA and it can chelate.
My train of thought to increase Ca uptake is to lower the K and find the ideal ratio of NH4/NO3. Pursuant to you jumping on this thread and sharing your findings, I also bought MAP to supplement my NH4. Already I notice a bit more green in my new growth, the exact green I've been trying to produce for the past months, but have failed at. So I'm already loving the NH4, and I have it at 10% or less. I expect your 8% to be closer to ideal, but I'll flesh that out for myself. I just want to lower the K some more.