Found this little tid bit of info from cannabis world in a post:
-----------------------------------------------------------
"AF recently sent me new specs for Pure Blend,
PBP vegetative 3 - 1.5 - 4
PBP Fruit & Flower 2.5 - 2 - 5
Tiger Bloom 2 - 8 - 4
so here is one more recipe...
the specs for PBP are different than I had before. I used the above specs, but kept what I had for Mg (.5%), since it was not listed.
I find that PBPGrow is not needed, too low in P
instead I recommend
8ml/gal tiger bloom, plus
16ml/gal PBPBloom, plus
2ml/gal epsom salt
this results in the following values
N 148
P 111
K 246
Mg 71
I dont know if there are micros in PBPGrow that make it necessary to use it, I dont have the specs. Nor do I know how the pH will behave with those nutes. All Im saying is that the recipe will provide what I believe are reasonable elemental ppm values, approximating the proven values of GH 0-8-16"
Some more good info. from him.
"here are some organic formulas to play with, I have tried to taylor them to compare to GH 0-8-16. the pure blend formulas are proven, the others are just theoretical number crunching. I dont know about pH behavior, or micronutes levels.
Generally the organics run low in P and/or Mg. So I change the dosages from the manufacturers recommendations, and add Epsom.
Credit is due to pH for making all the spreadsheets and informationa bout Mel Franks target values available.
hth
Lucas
---
Metanaturals 3-3-3 10ml/gal
Metanaturals 1-5-5 10
1/4 tsp epsom
N 106
P 92
K 175
Mg 61
---
Pure Blend Pro Grow, 8ml/gal
Pure Blend Bloom, 16ml/gal
1/4 tsp epsom
N 169
P 51
K 246
Mg 64
---
Fox Farm Grow Big, 8ml/gal
Pure Blend Pro Bloom, 16
1/4 tsp epsom
N 169
P 55
K 281
Mg 64
---
G Gold Base, 20ml/gal
G Gold Early Bloom 20ml/gal
N 159
P 115
K 307
Mg 79
Below are some suggested alternative formulas to GH 0-8-16, listed by dose of nutes in milliliters per gallon and the resulting elemental PPM's of the nutrients. When suggesting nutes recipes, I aim for the following approximate elemental PPM values
N 100
P 100
K 200
Mg 60
The following values were calculated using pH's spreadsheet (without accounting for weight)
GH 8ml/gal Micro, 16ml/gal Bloom
N 106
P 92
K 158
Mg 63
8ml/gal Pure Blend Pro Grow, plus 16ml/gal Pure Blend Pro Bloom, plus 1/4tsp/gal epsom
N 85
P 88
K 246
Mg 63
8ml/gal Sensi Bloom A, plus 16ml/gal Sensi Bloom B, plus 1/4 tsp/gal epsom (or 1/4tsp/gal Big Bud which also contains amino acids)
N 154
P 85
K 254
Mg 74
Analysis
GH has the highest Mg levels without supplement. imho Mg is the #1 nute defficiency in cannabis nutes.
The NPK ratio of 1-1-2 is not cast in stone. Some folks advocate for 1-1-3. The Pure Blend recipe is closest to a 1-1-3 ratio, in fact if you use it at 10grow, 20bloom, its almost exact. PBP has the benefit of being partly organic, otoh it is also a bit trickier in terms of initial pH.
Looking at the elemental ppm's above, notice GH is on the low end of providing K, yet it is a proven recipe. Notice also that the AN recipe is highest in N, which is likely to enhance veg growth.
"
-----------------------------------------------------------
"AF recently sent me new specs for Pure Blend,
PBP vegetative 3 - 1.5 - 4
PBP Fruit & Flower 2.5 - 2 - 5
Tiger Bloom 2 - 8 - 4
so here is one more recipe...
the specs for PBP are different than I had before. I used the above specs, but kept what I had for Mg (.5%), since it was not listed.
I find that PBPGrow is not needed, too low in P
instead I recommend
8ml/gal tiger bloom, plus
16ml/gal PBPBloom, plus
2ml/gal epsom salt
this results in the following values
N 148
P 111
K 246
Mg 71
I dont know if there are micros in PBPGrow that make it necessary to use it, I dont have the specs. Nor do I know how the pH will behave with those nutes. All Im saying is that the recipe will provide what I believe are reasonable elemental ppm values, approximating the proven values of GH 0-8-16"
Some more good info. from him.
"here are some organic formulas to play with, I have tried to taylor them to compare to GH 0-8-16. the pure blend formulas are proven, the others are just theoretical number crunching. I dont know about pH behavior, or micronutes levels.
Generally the organics run low in P and/or Mg. So I change the dosages from the manufacturers recommendations, and add Epsom.
Credit is due to pH for making all the spreadsheets and informationa bout Mel Franks target values available.
hth
Lucas
---
Metanaturals 3-3-3 10ml/gal
Metanaturals 1-5-5 10
1/4 tsp epsom
N 106
P 92
K 175
Mg 61
---
Pure Blend Pro Grow, 8ml/gal
Pure Blend Bloom, 16ml/gal
1/4 tsp epsom
N 169
P 51
K 246
Mg 64
---
Fox Farm Grow Big, 8ml/gal
Pure Blend Pro Bloom, 16
1/4 tsp epsom
N 169
P 55
K 281
Mg 64
---
G Gold Base, 20ml/gal
G Gold Early Bloom 20ml/gal
N 159
P 115
K 307
Mg 79
Below are some suggested alternative formulas to GH 0-8-16, listed by dose of nutes in milliliters per gallon and the resulting elemental PPM's of the nutrients. When suggesting nutes recipes, I aim for the following approximate elemental PPM values
N 100
P 100
K 200
Mg 60
The following values were calculated using pH's spreadsheet (without accounting for weight)
GH 8ml/gal Micro, 16ml/gal Bloom
N 106
P 92
K 158
Mg 63
8ml/gal Pure Blend Pro Grow, plus 16ml/gal Pure Blend Pro Bloom, plus 1/4tsp/gal epsom
N 85
P 88
K 246
Mg 63
8ml/gal Sensi Bloom A, plus 16ml/gal Sensi Bloom B, plus 1/4 tsp/gal epsom (or 1/4tsp/gal Big Bud which also contains amino acids)
N 154
P 85
K 254
Mg 74
Analysis
GH has the highest Mg levels without supplement. imho Mg is the #1 nute defficiency in cannabis nutes.
The NPK ratio of 1-1-2 is not cast in stone. Some folks advocate for 1-1-3. The Pure Blend recipe is closest to a 1-1-3 ratio, in fact if you use it at 10grow, 20bloom, its almost exact. PBP has the benefit of being partly organic, otoh it is also a bit trickier in terms of initial pH.
Looking at the elemental ppm's above, notice GH is on the low end of providing K, yet it is a proven recipe. Notice also that the AN recipe is highest in N, which is likely to enhance veg growth.
"
