Masterblend comes just as highly recommended as Jacks, this price comparison from Dr Dan is a good article, his whole site is worth a browse even for soil growers:
Also worth a read:
Disclaimer: Probably not everything I say here will be true. I’m just a guy who reads and experiments, and does my best to continually improve.
Skip to the recipes
Part 1 - Individual nutrients and the grow cycle
Macronutrients: Nitrogen (N), Phosphorous ( P), Potassium (K)
Secondary nutrients: Calcium (Ca), Magnesium (Mg), Sulfur (S)
Micronutrients: Iron (Fe), Zinc (Zn), Boron (B), Manganese (Mn), Copper (Cu), Chlorine (Cl), Molybdenum (Mo), Nickel (Ni)
I won’t get too in depth into nutri…
I did a quick search and couldnt find a Jacks specific thread, so Im starting one. Im mainly interested in the hydro applications, but feel free to toss in anything you want on this general subject or even bring up other nutes - but - Id prefer to keep in mostly about Jacks or the other brands that use the same basic formula. Still, Im not a “stay on topic” fanatic, so feel free to wander…
Here’s a thought I had — perhaps 0-12-26 is inherently an even more flexible formula than 5-12-26, because you can use magnesium nitrate instead of Epsom.
Veg: you run the recipe using magnesium nitrate in the same amount you would normally use epsom with 5-12-26. This brings your nitrogen back up.
Flower: you run the recipe using epsom. This drops your nitrogen back down how you’d want it when you normally use 0-12-26
I’d have to run the numbers through hydrobuddy, but I think it would work …
If you’re trying to amend the 321 schedule, I haven’t found much use for potassium nitrate. However, I think there is value in potassium sulfate. Usually I consider adding MKP at the end, when the plant does not need more nitrogen.
Usually what I’m trying to do is just tweak 321 using various other amendments. From experimentation, the “safe” rule of thumb is not to exceed half a gram of “other” amendments. You can also do a full swap in some cases. Some example formulas I have been testing ar…
Hi all, I wanted to contribute something to this wonderful forum! I’ve been tinkering with excel and comparing fertilizer brands. Please check this out and if you want to see any specific comparisons let me know!!
[SaltCompare]
6 Likes
