LurchLurkin
Active Member
I've seen Fatman7574's recirculating nutrient formulas but I was curious if they were formulated with RO water in mind or if they were formulated with tap water in mind? If they were formatted with RO in mind, did he suggest adding in cal mag? Anyone ever used them?
his formulas:
Fatmans Grow Recirculation 5-24-2010(requires
use of phosphoric acid for pH adjustments)
ppm
Nitrogen 267
Phosphorus 82
Potassium 291
Magnesium 93
Calcium 261
Sulfur 123
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .03
Ounces
Part A
Calcium Nitrate 17.3
Potassium Nitrate 3.3
Iron Chelate 1.35
PART B
Potassium Nitrate 3.3
MonoPotassium Phosphate 5.2
Magnesium Sulfate 12.6
Manganese Sulfate .269
Boric Acid / Solubor .368
Zinc Sulfate .291
Copper Sulfate .059
Ammonium Molybdate .03 or sodium molybdate .036
Volume of Stock Solutions 1 Gallon Each of Part
A and Part B
Dilution Rate 100
fatmans's Bloom Recirculation 05-24-2010
ppm
Nitrogen 293
Phosphorus 80
Potassium 350
Magnesium 91
Calcium 268
Sulfur 120
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .0009
Ounces
Part A
Calcium Nitrate 17.7
Potassium Nitrate 4.3
Iron Chelate 1.35
Part B
Potassium Nitrate 4.3
MonoPotassium Phosphate5.0
Magnesium Sulfate12.2
Manganese Sulfate .269
Boric Acid / Solubor .368
Zinc Sulfate .291
Copper Sulfate .059
Ammonium Molybdate .001 or sodium molybdate
.0012
Volume of Stock Solutions 1 Gallon each of Part
A and Part B
Dilution Rate 100
The Bloom contains a little more Nitrogen and
more Potash as is recommended with a Bloom
formula. The Phosphorus is higher due to
buffering uses of Phosphorus with a
recirculatig reservoir. Note Pj hpsporus is
about doble that as in the mj tissue sample
avg. for both Grow and Bloom. Extra calcium is
added due to buffereing needs with a
recirculation reservoir.
The NPK ratios are For VEG 3.25 1 : 3.54
(tissue samples avg 7:1:7)
For Bloom 3.66 : 1 : 4.37 (tissue samples avg
5:1:6)
Recirculating reservoirs are a PITA due to
buffering always going on in the reservoir.
With rarin to waste you just set up
formulations with ratios equal to your tissue
sample ratios as no buffering is required. Not
the case with recirculating resrvoir nutrient
formulstions.
his formulas:
Fatmans Grow Recirculation 5-24-2010(requires
use of phosphoric acid for pH adjustments)
ppm
Nitrogen 267
Phosphorus 82
Potassium 291
Magnesium 93
Calcium 261
Sulfur 123
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .03
Ounces
Part A
Calcium Nitrate 17.3
Potassium Nitrate 3.3
Iron Chelate 1.35
PART B
Potassium Nitrate 3.3
MonoPotassium Phosphate 5.2
Magnesium Sulfate 12.6
Manganese Sulfate .269
Boric Acid / Solubor .368
Zinc Sulfate .291
Copper Sulfate .059
Ammonium Molybdate .03 or sodium molybdate .036
Volume of Stock Solutions 1 Gallon Each of Part
A and Part B
Dilution Rate 100
fatmans's Bloom Recirculation 05-24-2010
ppm
Nitrogen 293
Phosphorus 80
Potassium 350
Magnesium 91
Calcium 268
Sulfur 120
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .0009
Ounces
Part A
Calcium Nitrate 17.7
Potassium Nitrate 4.3
Iron Chelate 1.35
Part B
Potassium Nitrate 4.3
MonoPotassium Phosphate5.0
Magnesium Sulfate12.2
Manganese Sulfate .269
Boric Acid / Solubor .368
Zinc Sulfate .291
Copper Sulfate .059
Ammonium Molybdate .001 or sodium molybdate
.0012
Volume of Stock Solutions 1 Gallon each of Part
A and Part B
Dilution Rate 100
The Bloom contains a little more Nitrogen and
more Potash as is recommended with a Bloom
formula. The Phosphorus is higher due to
buffering uses of Phosphorus with a
recirculatig reservoir. Note Pj hpsporus is
about doble that as in the mj tissue sample
avg. for both Grow and Bloom. Extra calcium is
added due to buffereing needs with a
recirculation reservoir.
The NPK ratios are For VEG 3.25 1 : 3.54
(tissue samples avg 7:1:7)
For Bloom 3.66 : 1 : 4.37 (tissue samples avg
5:1:6)
Recirculating reservoirs are a PITA due to
buffering always going on in the reservoir.
With rarin to waste you just set up
formulations with ratios equal to your tissue
sample ratios as no buffering is required. Not
the case with recirculating resrvoir nutrient
formulstions.