Chemical salt fertilizer recipe (for flowering) needed! very urgent!!

Hello, I want to prepare my own nutrient solution by using chemical grade salt's according to chemist's salt fertilizer recipe (look at GROWFAQ). I will be growing lowryder2's. Another page in the GROWFAQ says that a proper flower type solution should have around 1200 ppm, but the one on the chemist's salt fertilizer recipe (flower mix -cola diet) only has around 600 ppm, no way enough nitrogen or phosphate for flowering. I have been trying to modify the formula in to a proper flowering solution but I can't do it. Is there anyone out there that knows a recipe for flowering that uses chemical salts (K2SO4 etc.)? I would really appreciate any help on the matter. Thanks!

I am posting the two different pages from GROWFAQ, the recipe given in flower mix doesn't match the ppm requirments given below! How can I adjust the formula?? HELP PLEASE!




ChristianKungFu - TDS, PPM, and EC


FLOWER MIX - COLA DIET

To make 50 liters of Cola Diet(this provides N 75 P 100 K 150 Ca 200 Mg 75 S 185):

Calcium sulfate dihydrate (gypsum) 20.4 g
Epsom salt 37 g
Potassium sulfate 2.61 g
Potassium dihydrogen phosphate 21.93 g
Calcium nitrate tetrahydrate 30.5 g
MES 4 g

I weighed out the dry salts and dissolved them directly in the reservoir. The gypsum was the last item in, and it did dissolve. Using RO water the TDS on my Oakton pen read around 800. Nice and gentle on the ladies' feet.

A 50 liter reservoir would be eaten up within 5 days by 20 square feet of canopy.

ChristianKungFu - TDS, PPM, and EC



PPMs for each growth phase
You may desire more N during veg stages for example. The key is NOT to obsess over the exact numbers. Too many experienced growers give advice in exact parameters to appear 'scientific' or something...but there are too many other factors involved in the actual UPTAKE of these nutrients by roots to claim specificity. These are just general parameters that you can tweak under your own conditions. And again, the plant can tolerate more as it gets larger and has more root area to uptake nutes and leaf area to transpire water...start light, gradually increase with each feeding as your lant can handle it.

Keep in mind, my estimates are given for soil mediums which can tolerate higher levels because the soil components will bond with many elemental ions....a hydro system needs to be more precise....I'm not very familiar with those systems. You've read the dislaimer! Also remember that these parameters are based on the assumption of using DISTILLED water. Tap water will add another 200-400 PPMs, so you would have to adjust accordingly...especially with Cl, Ca, Na, and in rare case, S.

SEEDLING (2-3 weeks...look for 4-5 sets of alternating nodes before moving to veg)

N 150
P 100
K 150
Ca 75
Mg 75
S 25-50
Fe 15
Cl 15
Mn 7
Cu 9
Zn 3
Total: 600ppm

VEGETATIVE/PRE-FLOWER (2-4 weeks)

N 300
P 100
K 200
Ca 100
Mg 100
S 50-75
Fe 25
Cl 25
Mn 10
Cu 15
Zn 5
Total: @1000pm

FLOWER (strain dependent-usually 6-8 weeks)

N 300-400
P 400
K 200
Ca 100-150
Mg 100-150
S 100-150
Fe 25+
Cl 25+
Mn 10
Cu 15
Zn 5
Total: @1300-1500ppm

FLUSH/HARVEST (2 weeks)
N 0
P 75
K 75
Ca 50
Mg 50
S 50
Fe 25
Cl 25
Mn 10
Cu 15
Zn 5
Total: @400ppm

Yeah, doing the math really sucks...

Anyway, I've made some calculations and I've come up with two recipes; one for the seedling phase and one for the flowering phase. In fact I just took the veg formula recipe from Chemist's Salt Fertilizer Recipe as my seedling solution, and I added some N and P to the flower mix- cola diet recipe for the flowering solution. (used NaNO3 for N, and (NH3)3PO4 for p)

NaNO3 - 15% N meaning 15-0-0 meaning 1 grams/liter= 150ppms
(NH3)3PO4 - 10% N, 45& P meaning 10-45-00 meaning 1 grams/liter= 100ppms of N, 450 ppms of P)

I used these calculations (above) in my recipe, hope it is correct??

Anyway, I will be growing 1 lowryder2 (yes only 1) first 2 weeks, the seedling mix, next 4-5 weeks the flower mix.

Seedling mix recipe: 20lt's worth - won't be needing that much

CaNO3.4H20 - 20 g
KH2PO4 - 4.10 g
K2SO4 - 6.0 g
MgSO4 - 7.0 g
MES Buffer - 2.0 g
(N:100 P:50 K:212 Ca:143 Mg:75 S:11 TOTAL PPM: 700ppm

(the numbers are rounded, they aren't precise)

Flower mix recipe: 20lt's worth
CaSO4.2H2O - 8.16g
MgSO4 - 14.8g
K2SO4 - 1.0 g
CaNO3.4H20 - 12.2g
MES Buffer - 2.0 g
this formula gives (N 75 P 100 K 150 Ca 200 Mg 75 S 185)

I want N 200ppm and P 400ppm for flowering, so I add:
NaNO3 16.6 g 16.6g/liter gives 16.6x150= 2490ppm, in 20 lts reservoir it contributes 2490/20= 124.5ppm
(NH3)3PO4 13.5 g 13.5g/liter gives 13.5x450= 5625ppm, in 20lt reservoir it contributes 5625/20= 280ppm P and 13.5x100/20= 67.5 ppm N

adds up to:
N 140 P 380 K 150 Ca 200 Mg 75 S 185

Do you think this will be a proper mix? I don't know if NaNO3 or (NH3)3PO4 will precipitate with something so if anyone knows please warn me
If people suggest that I don't use this formula, I will buy any nutrient I can find (not much choice where I live) and use it. An contribution or comment or advise is much appreciated!

why is this same question being multiple posted over the thread???

sorry about that, because I need an answer soon, I figured I'd get more people to read it this way..