ProMix HP Organic Amendments Recipe / Recommendations

jimbonorman

jimbonorman

Well-Known Member
Hi all, I’m switching to ProMix and looking for insights or suggestions.

In past runs I’ve used FFOF with 20% perlite, 20% EWC, DynoMyco and Dolomite Lime and then top dressed with DTE 4-4-4 and 4-8-4 throughout the grow cycle. I’m tempted to run the same recipe simply swapping FFOF with ProMix HP, but have heard HP is more like using coco. I get the sense I may want to amend with 4-4-4 from the beginning and not wait a month since HP is not a charged soil mix, but I am all ears for any advice to the contrary.

Any and all thoughts welcome and appreciated. Thanks!
 
P

Phytoplankton

Well-Known Member
Promix is a peat based soil less media. So it’s more like a semi-hydro grow. I’ve used it, and FFOF, I prefer the FFOF, but I only tried promix once.
 
DMChiz

DMChiz

Well-Known Member
I’ve been using Pro Mix organic for the last four grows as a base. Amended with: EWC, additional perlite, GG 4-4-4, bokashi fermented fertilizer. That’s the base and I’ll tweak w/ tea and feed (fish fert, kelp etc) during grow. No complaints thus far.
Edit: yes, it’s peat based like FFOF and has some pre-charge
 
jimihendrix1

jimihendrix1

Well-Known Member
I would for 100% for sure, amend, from the start.

Ive used Promix BX for a very long time. I usually use chemicals, But, when I have grown Organic, I used.

12-11-2-Peruvian Seabird Guano
0-0-52-Potassium Sulfate
Kelp
Azomite
Biochar
Calcitic Lime
Dolomitic Lime.

Promix, uses a mix of Calcitic, and Dolomite, and they use it at a ratio of?
2/3 Parts Calcitic Lime, and 1/3 Parts Dolomitic Lime. Calcitic is best for faster PH Change, and added Calcium, and Dolomite is used for longer term PH Buffer, and Magnesium.

I make teas with the Seabird Guano, and Kelp. Top Dress 0-0-52, every 6 weeks.

Promix HP, wont drain as fast a coir.
 
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jimbonorman

jimbonorman

Well-Known Member
DMChiz said:
I’ve been using Pro Mix organic for the last four grows as a base. Amended with: EWC, additional perlite, GG 4-4-4, bokashi fermented fertilizer. That’s the base and I’ll tweak w/ tea and feed (fish fert, kelp etc) during grow. No complaints thus far.
Edit: yes, it’s peat based like FFOF and has some pre-charge
Click to expand...
Thanks this is super helpful! When you pre-amend with GG, how many tbsp/gal do you typically drop in?
 
DMChiz

DMChiz

Well-Known Member
jimbonorman said:
Thanks this is super helpful! When you pre-amend with GG, how many tbsp/gal do you typically drop in?
Click to expand...
I premix for all my containers so in terms of measurement, about half this tub goes into the mix with everything else. I’ll mix up for 5-6 10g pots. My only caution with the ProMix organic is that it needs to be wet as you mix. It can be hydrophobic, so adding moisture as you go is crucial. Happy growing :)
IMG_3193.jpegIMG_3192.jpeg
 
jimbonorman

jimbonorman

Well-Known Member
DMChiz said:
I premix for all my containers so in terms of measurement, about half this tub goes into the mix with everything else. I’ll mix up for 5-6 10g pots. My only caution with the ProMix organic is that it needs to be wet as you mix. It can be hydrophobic, so adding moisture as you go is crucial. Happy growing :)
View attachment 5382966View attachment 5382967
Click to expand...
Awesome - thanks for all the info!
 
weedstoner420

weedstoner420

Well-Known Member
jimbonorman said:
Yeah I checked DTE since that’s what I use and they recommend more like 2 tbsp per gal.
Click to expand...
Maybe the npk values of the DTE are higher...? Or they want you to top-dress more/more often...?

I've been using Espoma products in my soil for a while, and they recommend 2 cups per cf.
 
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