Home made ferts

[leafminer]

I took a good hard look at some of those commercial products that people pay big bucks for. And I don't see why they cannot be equalled at a fraction of the cost. The N and the K are too easy, and the minerals likewise, so I have started by making a pure bloom nute, only P.
I took some 90% phosphoric acid and neutralised it with calcium carbonate (chalk) to form calcium phosphate. This should be 0-23-0. I tried it on one of my tomato plants yesterday (I have identical ones being fed MG 15-30-15, so I used three times the quantity of calcium phosphate, as if I were feeding 0-69-0)
If results are good I'll make two different batches, one for veg and one for flower.

 

[purplephazes]

here's an interesting grow using the very basics page 3 and 4..hxxp://www.rollitup.org/outdoor-growing/24703-its-all-bullsh-t-3.html

 

[leafminer]

Yeah. I don't know about those expensive products aimed at bud growers, but I spent some time last week looking at the ingredients of various fairly expensive ferts at the local Home Depot. It's just basic chemicals. Us humans are basic chemicals . . .
To take an example, MG super bloom 15-30-15 is a simple mixture, mainly ammonium phosphate. I grow in coco which usually is greedy for Ca, so I made calcium phosphate instead. The tomato is doing ok so I just tried some on my flowering beans ...