I have been all through this thread, went and did some research and now I'm back to share what I've learned/seek direction and counsel. I have heard great things about Bloom enhancers like Bud Blood, Bud Ignitor, Bushmaster, the list goes on. Bud Blood guaranteed analysis is (0-39-25) and $129 when bought in 10.5oz pkg. I spoke with a representative at A.N. and was assured that there were no PGR's in Bud Blood. (Bushmaster has Paclobutrazol) Any product that contains PGRs must indicate it on the label along with appropriate warnings/indications for use. The A.N. guy told me straight up,"It's [Bud Blood] just a P-K boost." So here's what I'm thinkng: Why not buy Soluble potash from someone like; [
http://www.kelp4less.com/shop/soluble-potash-fertilizer/?add-to-cart=variation&product_id=68#UMdTE-T7K8A ] (30lbs/$29.50) and phosphoric acid [
http://www.amazon.com/Gallon-Phosphoric-Acid-Grade-Concentration/dp/B0039CWTEQ/ref=pd_sbs_indust_5 ] and for 80 bucks you never have to buy that shit again. People are boasting 20-30% increases in yield. It would seem that this stuff would more than pay for itself the first time you use it. (probably why they get away with charging an arm and a leg) Here's what I'm unclear about, and this is the reason, Uncle Ben, that I chose your post to post this in, I'm most interested in your opinion as you are the only one I've seen post on DIY nutrients.
Q1) adding phosphoric acid will lower the pH so how do you give such a boost while maintaining your optimal uptake parameters?
Q2) how would go about mixing/applying such a program? Q3 to come. Flowering enhancers that contain PGRs are commonly applied once at the beginning of the flowering cycle and once at the 5th week of flowering. So..
Q3)Would a P-K boost campaign like I am describing be applied in the same way? Or since a PGR is not present, would it be better to give the P-K boost all through the flowering cycle? (excepting flush week of course) I do plan on conducting a controlled experiment and sharing the results but it would be good to get as much info and experienced advice as I can, before I start. Bring on the comments boys and girls and especially Uncle Ben if you read this, I know you have some exp with DIY nutes.
Note: My systems are drip-feed/rock-wool and ebb-and-flow/rock-wool but I am curious to hear your thoughts on methodology for soil and soil-less as well.