Help switching to dry nutrients

Glaucoma

Well-Known Member
Medium: 2:1:1 peat moss, roots organic soil, perlite
Containers: 7 gallon fabric pots
Lighting: HID (MH veg, HPS flower)

I amend the medium with myko and 2Tbsp Hi-Yield Agricultural Limestone per gallon.

I was thinking about using JR Peters Citrus Feed 20-10-20. Would Mono-Potassium Phosphate be best to use after transplants or when I need a P bump?

Since I use limestone in my medium, would Calcium Nitrate still be what I should use for N bumps? Should I stop using limestone in the medium and supplement the feedings with epsom instead?

I expect to make a stock solution for the base nutrient. Should I do the same for the supplements?

Although I never fell for the 100 bottle regiments, I'm sick of the ones I do use. It's still just too much money. Help a guy out?
 

churchhaze

Well-Known Member
With JR Peters Citrus Feed, I would fortify the medium with limestone. Monopotassium phosphate would be a good way to add P. If you want to bump N and P, with a lime fortified medium, you could consider ammonium phosphate.

Calcium nitrate is the main source of N in hydro, but for a lime fortified medium you can also provide urea and ammonium forms of N.
 

Glaucoma

Well-Known Member
With JR Peters Citrus Feed, I would fortify the medium with limestone. Monopotassium phosphate would be a good way to add P. If you want to bump N and P, with a lime fortified medium, you could consider ammonium phosphate.

Calcium nitrate is the main source of N in hydro, but for a lime fortified medium you can also provide urea and ammonium forms of N.
I'm not even set on the Citrus Feed, either, it just seems to be the common starting point these days.

Eventually I plan on growing a strain that calls for lower levels of Nitrogen, so I'd like to keep it as flexible as possible.

So instead of using Calcium Nitrate, Ammonium Nitrate?

And then.. that's it, right?
 

churchhaze

Well-Known Member
I'm not even set on the Citrus Feed, either, it just seems to be the common starting point these days.

Eventually I plan on growing a strain that calls for lower levels of Nitrogen, so I'd like to keep it as flexible as possible.

So instead of using Calcium Nitrate, Ammonium Nitrate?

And then.. that's it, right?
greenhouse grade calcium nitrate (yara) is 5 parts calcium nitrate and 1 part ammonium nitrate. It might seem suspicious getting a bunch of ammonium nitrate as it can be used to make smokeless powder.
 

Glaucoma

Well-Known Member
greenhouse grade calcium nitrate (yara) is 5 parts calcium nitrate and 1 part ammonium nitrate. It might seem suspicious getting a bunch of ammonium nitrate as it can be used to make smokeless powder.
This just brings me back to my original mention of ditching the limestone and adding epsom with the calcium nitrate.

I wouldn't likely buy more than 5lbs of ammonium nitrate. I understand the concern around it, but.. it's a fairly small amount and not illegal to use. If they wanna spend the resources investigating a 5lb purchase, it's only my tax dollars being wasted.
 
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