In need of help!

[CanadaDank]

Hello ICMAG,

I’m in need of some help. I’m trying to make a soil blend but I’m terrible at this sort of thing. I want to grow some Sungold tomatoes using x3 20 gallon pots. I want to do a sort of replication of Tom Hills soil blend but on a small scale and with less ingredients. For mine I want to use promix instead of potting soil, chicken manure and gypsum. I need to scale it down to use in 60 gallons so I need to know how many gallons of each ingredient I need to make this work. Any help would be greatly appreciated as I know some ppl are great at this on here.
I attached a picture with Tom Hills soil recipe.

 

[AgentPothead]

If the recipe makes 300 gallons, and you want 60 gallons, wouldn't you just divide all the recipe ingredients by 5? So you wanna replace the soil, manure and gypsum which is 37.5 cubic feet + 4 cf + .5cf for a grand total of 42 cubic feet. 1/5 of that is 8.4 cubic feet. Promix comes in what, 2.8cf loose bags so you would need exactly 3x loose bags? If my math is right? It's not gonna be the same ratios of nutrients as in the recipe though.

 

[h.h.]

Assuming ProMix is equal to potting soil.



He claims to get 300 gallons.
You want 60.
Divide everything by 5.
Am I missing something.

 

[CanadaDank]

I guess I was confused because my friend said one 3.8 cf bail of promix makes about 55 gallons of soil but according to this I need 7.5 cf of promix for 60 gallons of soil.

 

[h.h.]

60 dry gallons = 9.33 cu.ft.
3.8 cu.ft. = 24.43 dry gallons

 

[troutman]

You can get bone meal and chicken manure at Canadian Tire.

 

[Rico Swazi]

hey there Canada Dank... any reason for using 20 gal pots? You could go even smaller scale/less ingredients with 3 to 5 gallon for each individual plant OR put 3 plants in the 20s


the larger the pot the more difficult it is to move and is something to consider


do you have the seeds started yet?