Jacks vs Masterblend vs ?

Dr. Who

Well-Known Member
It's working for me too.

Here's the 100% numbers...
View attachment 4451634
That chart tells me that is for soil use only.
It rely's on soil content for the 0 micro counts!
Here you can play with Fe and Mn along with some very small amounts of a cpl other things to effect the THC/CBD counts.

Adjusting the Fe and Mn to 100 ppm in the soil is the goal. A limit of 10% higher, and not lower is acceptable.
Mn over Fe for THC and the reverse will raise CBD. Equal amounts helps the THC side.
 

rkymtnman

Well-Known Member
@Dr. Who Do you have a target ppm of S for bloom? last 2 grows, i've been bumping my usual 1g/gal of Epsom to 3g/gal for the last 2 weeks of bloom.

Have you found a sweet spot for S?
 

TintEastwood

Well-Known Member
That chart tells me that is for soil use only.
It rely's on soil content for the 0 micro counts!
Here you can play with Fe and Mn along with some very small amounts of a cpl other things to effect the THC/CBD counts.

Adjusting the Fe and Mn to 100 ppm in the soil is the goal. A limit of 10% higher, and not lower is acceptable.
Mn over Fe for THC and the reverse will raise CBD. Equal amounts helps the THC side.
Jacks base contains the micros. I'm only concerned with the macro nutrients on my lil spreadsheets.
I run in coco.
 

indianajones

Well-Known Member
You don’t ONLY need two grams of chemgro. It has no calcium AT ALL. Maybe you forgot about mentioning you need calnit. Made me turn on my computer for no reason.
To the OP, I ran MC for awhile but had leafy plants in flower. I ran under 4 grams (3-3.4 grams per gal to be exact.v2 version) but still got too dark green leafy plants in flower. Am trying jacks 321 and my plants don’t have the purple stems my plants had with mc. Am trying it in flower now.
Maybe it's just my education (double majored chemistry and physics), but needing calcinit and epsom is pretty well implied in a thread on Jack's.
 

ubluntu

Active Member
Any of these available in canada without crazy shipping?

I think Plant Prod has similar products but ordering doesn't seem easy. I'd settle for some 20-20-20 and MKP. Amazon.ca sucks
 

Thegermling

Well-Known Member
Maybe it's just my education (double majored chemistry and physics), but needing calcinit and epsom is pretty well implied in a thread on Jack's.
Not every new grower will know that bro. To make it worse most probably don’t look into the “nutritional content” of fertilizers.
Some new grower could take your advice and screw up his first grow. Didn’t you learn how to clarify with all that schoolin.
 

TintEastwood

Well-Known Member
Any of these available in canada without crazy shipping?

I think Plant Prod has similar products but ordering doesn't seem easy. I'd settle for some 20-20-20 and MKP. Amazon.ca sucks
ebay might be worth a peek....

 

Dr. Who

Well-Known Member
@Dr. Who Do you have a target ppm of S for bloom? last 2 grows, i've been bumping my usual 1g/gal of Epsom to 3g/gal for the last 2 weeks of bloom.

Have you found a sweet spot for S?

You have to be of the mind that different sulfate compounds, effect different terpene's...
K sulfate is more fruity/grape like in effect result.
Mag Sulfate is more citrus in effect.

Playing with other sulfates to try and zero in more of what terp's they effect - Pine?

I have found through some years of playing.
Most patients and customers seem to prefer a "balanced" use of each I listed.
I go by % by volume in making the supplement and in application.
6% solution of K sulfate and a carb source is delivered at 7.5 ml per gallon.
The Mag sulfate Is a 1.6% (aprox) solution, delivered at the same 7.5 ml per gallon.

Some strains react with the blooming of some new terp profiles. Things there, just more expression.
Most react by increasing at an equal rate.
All get some flavor increase.
I see some increase in trich production and that is always good...

Now only if that Snowball pheno I have would ripen as quick as it bulks... :bigjoint:
 

rkymtnman

Well-Known Member
You have to be of the mind that different sulfate compounds, effect different terpene's...
K sulfate is more fruity/grape like in effect result.
Mag Sulfate is more citrus in effect.

Playing with other sulfates to try and zero in more of what terp's they effect - Pine?

I have found through some years of playing.
Most patients and customers seem to prefer a "balanced" use of each I listed.
I go by % by volume in making the supplement and in application.
6% solution of K sulfate and a carb source is delivered at 7.5 ml per gallon.
The Mag sulfate Is a 1.6% (aprox) solution, delivered at the same 7.5 ml per gallon.

Some strains react with the blooming of some new terp profiles. Things there, just more expression.
Most react by increasing at an equal rate.
All get some flavor increase.
I see some increase in trich production and that is always good...

Now only if that Snowball pheno I have would ripen as quick as it bulks... :bigjoint:
thanks. i'll have to incorporate some K sul next run and see how they like it.
 

MyBallzItch

Well-Known Member
I got some megacrop a/b when I last ran out of jacks.. wtf does this stuff do lol my tent is a fuckin mess of foxtails. Very odd growth.. and more foxtailing and sexual confusion in the past few months than I have ever had before combined. I had high hopes but I'm guessing there's too much N in flowering. I was under the impression that as I was using more B and less A that I was cutting down some of the N but looking closer it doesn't really seem that's the case.

I guess I will just use the rest of this big ass bag strictly during veg.

Think i'm going back to jacks lol
 

Wastei

Well-Known Member
Maybe it's just my education (double majored chemistry and physics), but needing calcinit and epsom is pretty well implied in a thread on Jack's.
Well Jacks 5-12-26 already contains epsom salt and many people only use two parts with either MC or Jacks.

I drop the epsom in second week of flower and only use about 1-1.3g Calcium nitrate and 3.6g 5-12-26 ratio in flower. Works well for me in hydro.

Education is not the most important thing to become a great grower. Practice by following plant response and experience is what matters at the end of the day.

If you're that educated you should also know that theory and practice is to very separate things. That's why we do practical and/or controlled experiments to get anecdotal evidence to prove a theory.

Plants are living things, not just numbers on a paper.
 
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