phantom grower

Active Member
It keeps the Ca:Mg ratio very close to 2:1. As I understand the base formula was added as a result of introduction of LED's. I do 4:2 in flower of A to B and skip Epsom salt all together. 5-12-26 has been around since 2002 and before that it was marketed as a Jacks Classic "veggie formula"

3-2-1 is a very affordable and stable veg formula that you can use throughout flower if you choose to. Mg is slightly too high but that's kinda of a positive depending on growing method.

I've used 3-2-1 from start to finish many cycles in everything from Aero to Coir but I like to lower nitrogen more on some long flowering sativa's that's why I wanted to figure out what's in the different formulas.

I use an old Excel spreadsheet I got here years ago that you can add whatever input to. I find it easier and more straight forward to use than Hydrobuddy. I mostly use my phone and you need a PC for HydroBuddy.

10-30-20 is a pretty bad NPK for flowering Cannabis, way to much P for me to be comfortable. If you choose to use it you have to figure that one out yourself! It's more for real blossoms and flowers that needs high P to flourish. Cannabis has low to moderate P requirements. Excess MKP will only crash pH in containers.

Here's a copy of Jacks Clone 15-6-17:

Calcium Nitrate - 8kg
Magnesium Nitrate - 5.5kg
MKP - 6kg
Potassium Nitrate - 3.65kg
Rexolin APN - 150g

Total - 23.3kg


Cheers!
Hey Wastei, thanks for the post! is there any way you can link me to that excel sheet you mentioned?
 

Nutty sKunK

Well-Known Member
Happy to have you follow along Joe!

I'm curious about the new approach too with less light in flower. I munched on some leaves earlier and they were more potent than I expected, took me a little off guard. I suspect that lowering light hours all the way til harvest will alter the felt effects.
I would assume more cannabinoids due to less degradation by light/heat?
 

Wastei

Well-Known Member
I would assume more cannabinoids due to less degradation by light/heat?
I'm suspecting less degradation and different effects too. Certain outdoor grown plant that I've tried has been very medicinal and has always finished with only 5-6 hours of light and being fully developed, good yielder and potent.

That always stuck with me how that's even possible? That an outdoor plant with less light intensity and hours can yield more than an indoor counterpart with perfect environment and repeated 12 hours of light.

I hope I'm able to describe the difference in effects after drying. I've had a lot of the same cut the last 6 months so I'm very familiar with the effects.

Happy to have you following along!
 

Nutty sKunK

Well-Known Member
I'm suspecting less degradation and different effects too. Certain outdoor grown plant that I've tried has been very medicinal and has always finished with only 5-6 hours of light and being fully developed, good yielder and potent.

That always stuck with me how that's even possible? That an outdoor plant with less light intensity and hours can yield more than an indoor counterpart with perfect environment and repeated 12 hours of light.

I hope I'm able to describe the difference in effects after drying. I've had a lot of the same cut the last 6 months so I'm very familiar with the effects.

Happy to have you following along!
Im keen to see the results also! Perhaps less stress and more night strengthens the microbial network? I’m pretty sure during night cycle the plant gives more sugars etc to the rhizosphere.

I find outdoors forgiving so you don’t need to be 100% dialled in. Indoor growing really highlights imbalances in my experience.

No worries! Nice to look through :)
 

Wastei

Well-Known Member
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33 days from flip.

#2 reading: 1.35 EC in, 1.5 EC out. pH 6.5 in, pH 6.1 out.

- I lowered EC back to 1.35 yesterday and raised pH to 6.5.

She's really start to produce and pH is declining. It's a result of different things one major is coir getting sour when being broken down, the others are the plant releases sugars and acids in search for phosphorous.

Cheers!
 
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Wastei

Well-Known Member
34 days from flip.

I saw some early N tox signs last night so I lowered EC back to 1.1. That seems to be the sweet spot. Deadbanding between 1.1-1.3 EC like last run. Second runoff reading came out at 1.6 EC.
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pH is declining so I raised it to 6.8. Run off came out 6.1. I will provably keep pH around 7.0 all the way through flower to keep runoff in range.
 

Wastei

Well-Known Member
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35 days in. Runoff is stacking up (1.7 out)to the point that I lower input EC to 0.95. pH is on point with 6.3 out and 7.0 in.

Flowers are filling up and they absolutely reek! Temps are about 29C and humidity 65-72%.
 
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Wastei

Well-Known Member
Runoffs:
#1: 0.95 EC in, 1.3 EC out.
#2 0.95 EC in, 1.35 EC out.
#3 0.95 EC in, 1.4 EC out.

pH 6.8 in pH 6.5 out, lowered to 6.6 in .
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First reading will probably come out at 1.3 tomorrow, now we're hopefully medling between 1.3-1.4 EC.
 

Wastei

Well-Known Member
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39 days from flip and about 25 days of actual flower time. Second runoff reading is coming up. She started to pack on weight about 50 days in from flip last time so she's slightly ahead in terms of calyx cluster formation. Not as long spears as last time but she will still pack on some weight and finish earlier. More and smaller flowers was the goal and I think we accomplished that pretty well!

Second runoff reading:

1.1 EC in, 1.4 EC out. pH 6.5 in, pH 6.2 out.
 
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Star Dog

Well-Known Member
How's stretch been with 8/16, did you notice a faster transition to flower or make any interesting observations?
 

Wastei

Well-Known Member
How's stretch been with 8/16, did you notice a faster transition to flower or make any interesting observations?
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Flower to leaf ratio is slightly different. All the girls were tall with only 3-4 tops last time and now she probably got 30+ this time around. She is slightly ahead in maturity so far. I did some final changes to the environment and lowered the light to final position since flowers are really starting to form. Stretch has been about the same at flip, maybe a few days(maybe week) shorter.

They are on 39 days from flip in both pictures taken with the same camera at about the same distance.
 

Wastei

Well-Known Member
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Did some maintenance to the light and cleaned the screens for the led strips. Still got two to go if I decide to clean all of them, only two middle ones left. Lowered light to final position to give her the best possibilities to fill out now after all stretch is done.
 

Wastei

Well-Known Member
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I cleaned all the led strip screens yesterday and lowered the fixture to final position and replaced broken ceramic discs to the humidifier, I also took the opportunity to clean the container.

Runoff readings:
#1 1.1 EC in, 1.45 EC out, pH 6.5 in, pH 5.9 out
#2 1.1 EC in, 1.4 EC out, pH 6.5 in, pH 5.9 out.

- Raising input closer to pH 7.0.
 

Wastei

Well-Known Member
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Runoff reading:
#1 1.05 EC in, 1.45 EC out. pH 6.8 in, pH 6.1 out.

- She's really bulking up with white hairs everywhere. She produce a lot of clusters and the white hairs/pistils indicate we still got a long way to go.

She's being pushed with a lot of light but only 8 hours. I see a lot of positive morphological changes like shorter internodal length and better flower to leaf ratio.

Total mass is lower but the turnover will be faster, it's hard to tell when she will finish but she's way faster and more mature this round. Smell is on point with pure gas with a lot of sweet undertones. It really hits you when opening the tent and the humidifier is running less meaning the total mass and transpiration rate is getting up there. I'm keeping RH at 63-68% at this point and temps around 27-29C/80-84F.
 

Wastei

Well-Known Member
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I keep feeding her 1.05 EC in and she keeps putting out 1.45-1.5 EC out.

pH has been 6.5 in the last couple of days and output's been very stable at 6.3.

I'm seeing some light K def and Ca def but nothing on the flowers meaning we're right on the edge on what she can tolerate in terms of light. It doesn't matter if I feed her more she will show N tox and start growing more foliage. It's acceptable with slight defs on the bigger leaves but keep close look at the smaller rounder fresher ones in the buds that is most recent growth and closest to the light. No pointers there so it's down to her using leaves as armor while adjusting for the stronger light intensity. You only spot it on certain places and it's not very noticeable. I more or less always have it to certain degree.

She's growing well and eating and drinking like a hog. Curious on the finish but the turnover is for sur faster this round. Maybe even one and a half week saved. Hopefully she's completely done at 80 days. She had at least one and a half week more at 83 days last time.
 

Wastei

Well-Known Member
❤‍ she's looking good mate ,nice full canopy❤
Thanks bud! She's getting there! She's filling out faster than I expected. She's at least a week ahead so far compared to last run, I think that will increase as she matures.

I plan on finish with low humidity and 6 hours of light the last week or two.
 
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