Crysmatic
- 529
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ammonium for soil makes sense, although I don't want pH to swing very much in hydro either. another tennet of lucasism is add backs. i questionned early on that if the ratios aren't correct, the solution would eventually go out of whack (and need replacement). lucas still promoted add backs and no res dumps through flowering. if 3-1-2 is closer to ideal, then no res dumps should be ok, right?
For JK bloom formula (120-60-280-60), I get:
Part A (10L)
Calcium Nitrate 164.4
Potassium Nitrate 725.1
Iron Chelate 19.48
Part B (10L)
MgSO4 608.6
ZnSO4 0.22
MnSO4 1.54
CuSO4 0.08
Boric Acid 2.86
Ammonium Orthomolybdate 0.02
Dilution Rate 100:1 (10mL/L)
However, I get 66 ppm calcium, and 64 ppm sulphur (target 120 and 64 ppm, respectively). When I use calcium sulphate to boost calcium to 120 ppm, sulphur goes to 111 ppm. JK, do you make your bloom solution with high sulphur, low calcium, or do you have a different recipe?
thank you for all this information! everyone wants bigger, better flowers. and to be able to mix up good solution for $5 vs $150 retail for generic solution (with less than ideal ratios) is amazing.
I believe PPM is grams per 1000 Liters.
For example, Calicum Nitrate, which is 15.5-0-0 NPK is 15.5 % nitrogen. so to get 100 grams of nitrogen from this, you would need 100g / 15.5% = 645g of Calcium Nitrate).
So, 645 g of Calcium Nitrate with purity of 15.5-0-0 will give 100g of pure nitrogen.
Dissolving 645 g of Calcium NItrate into 1000L of water will give you 100 ppm.
kuz, ppm is technically mg/L...much more manageable units. fatman's recipe is metric, and was converted to u.s. units which introduces error. there is 64.5g of calcium nitrate in 10L water...i just moved the decimal over...no fractions of fractions and junk. if you can learn the american system, you can surely rock s.i. it's especially tricky for me because a british gallon (which we use in canada) is 4.565L.
squarepusher: my question above is 'what do you do when the ingredients you have don't give you the ppm you want?' in my example, JK's bloom recipe comes up short on calcium, or too much sulphur.
also, do you use add backs? or dump your res every couple of weeks?
fatman's Bloom Formula
ppm
Nitrogen 240
Phosphorus 74
Potassium 261
Magnesium 84
Calcium 235
Sulfur 111
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .09
Ounces
Part A
Calcium Nitrate 82.2
Potassium Nitrate 15.6
Iron Chelate 7.14
Part B
Potassium Nitrate 15.6
MonoPotassium Phosphate 24.6
Magnesium Sulfate 59.7
Manganese Sulfate 1.423
Boric Acid / Solubor 1.944
Zinc Sulfate 1.542
Copper Sulfate .311
Ammonium Molybdate .013
Volume of Stock Solutions 5.3
Dilution Rate 100
EC 2.47
TDS 1729
pH 5.8
It might be just as easy to mix everything exactly as you want it, dump it in the res adding any calcium last, would that work?
A. nitrate is good for pH swings,just do not use much.
cal-25 is a good way to add Calcium for your girls, it is just easier I do not buy into that 50% increase in harvest. I am surprised I posted here as this is one subject I hate to talk about. I had some whinners from the CW days telling me I burnt their girls all up. Problem with salts is people for get what they just weighted out and double dipped. Since my accident I have a friend watch me and I weigh out formulas for the upcoming grow and just add the pouches each rez change. I too have sat and stared at my bags asking myself what did I just pour in.
Trust no one but yourself,because you are the Master of the room and only have yourself to blame if something is not going right. JK
also, I wanted to post some of Fatman's "suggested" formula's. I haven't double checked these, and am simply copying and pasting. Turns out, Lucas may work, but not be that great. Here are some recommended formulas for using RDWC type systems, or I'm sure would work in any system recirculating
The below formulations are for recirculation reservoir systems. They are low ammonium nitrogen fertilizations so they have lower phosphorus as typically phosphoric acid is being added quite often due to pH rises during high nitrate uptake. If you like I can make up formualtions more desirable to your growing method. Your method is more like a soil grow but with out the humus to buffer against pH rises. Your system would likely do better with lower calcium, and magnesium but higher phosphorus as one would use with a drain to waster hydro like a high pressure aero system.
fatman's Veg Formulation
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 .09
Ounces
Part A
Calcium Nitrate 91.5
Potassium Nitrate 17.4
Iron Chelate 7.14
Part B
Potassium Nitrate 17.4
MonoPotassium Phosphate 27.3
Magnesium Sulfate 66.4
Manganese Sulfate 1.423
Boric Acid / Solubor 1.944
Zinc Sulfate 1.542
Copper Sulfate .311
Ammonium Molybdate .013
Volume of Stock Solutions
5.3 gallons
Dilution Rate 100
EC 2.75
pH 5.8
TDS 1925
fatman's Bloom Formula
ppm
Nitrogen 240
Phosphorus 74
Potassium 261
Magnesium 84
Calcium 235
Sulfur 111
Iron 10.00
Manganese 5.00
Boron 5.00
Zinc 5.00
Copper 1.00
Molybdenum .09
Ounces
Part A
Calcium Nitrate 82.2
Potassium Nitrate 15.6
Iron Chelate 7.14
Part B
Potassium Nitrate 15.6
MonoPotassium Phosphate 24.6
Magnesium Sulfate 59.7
Manganese Sulfate 1.423
Boric Acid / Solubor 1.944
Zinc Sulfate 1.542
Copper Sulfate .311
Ammonium Molybdate .013
Volume of Stock Solutions 5.3
Dilution Rate 100
EC 2.47
TDS 1729
pH 5.8
Yes the formulations can be made in smaller batchs. Say for a 1.06 gallon batch divide each ingrediant by 5. A batch of say 5.3 gallons of concentrate means 2.65 gallons of Part A and 2.65 gallons of Part B. Not 5.3 gallons of each. The formulations should cost about $5 per each gallon of 100 to 1 concentrate.
but he is correct about the DO and the other technical info.
Take any one of the numbers below
Potassium Nitrate 15.6
Anyone care to help me muddle my way through this?
2b2s
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