Amendment ratios for 40/40/20 soil mix same as for 1/1/1 Coots mix?

I'll be trying a modified version of the 1/1/1 Coots mix, and changing it to 40/40/20 (as online some have said they get better long term results this way, with the 20% being the compost portion, as it prevents soil compaction after a few years).

Was just wondering if I need to adjust the soil amendment ratios for the 40/40/20 mix, versus the original 1/1/1?

(40% pumice, 40% peat moss, 20% Bu's Blend and/or Worm Castings).


Here's my 1/1/1 soil amendment mix:

Base Mix (1/1/1)
10 gallons Malibu's Bu's Blend
10 gallons Canadian Sphagnum Peat moss
10 gallons Pumice (or Lava Rock, or Perlite)


Amendments
4 Cups Kelp Meal - Down to Earth
4 Cups Crab/Crustacean Meal - Down to Earth
4 Cups Malted Barley Powder - KIS Organics
2 Cups Gypsum
4-6 Cups Basalt (1.42 Liters) - KIS Organics
6-8 Cups Activated Biochar (1.9 Liters) - Buildasoil
4 Cups Oyster Shell Flower

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Thank you for any feedback.

 

Thank J - looks like you're using half the amount of minerals and amendments I'm using? (I think mine is about 1 cup per cubic feet of dry amendments and 2 cups minerals).

Is there a reason you use half the amount of amendments?

 

Thanks Poi, cool to hear from you again. Do you have a recipe list with ratios by any chance? Would be interesting to compare.

JMcGD seems like he uses half the amount of amendments than in my recipe, I was thinking of doing something like that, just for costs sake as well. (Don't wanna drop money on more amendments, becomes expensive!)

 

Thanks guys! Well noted