Nutrient Question

ChemPro · Apr 3, 2016

So I have been following this schedule below using General Hydroponics Flora Series. The grow (green) macro (purple) and bloom (pink) bottles.

Veg –
week 1 – 5ml Grow – 2.5ml Micro – 2.5ml Bloom-400/600 ppm
week 2 – 10ml Grow – 5ml Micro – 3ml Bloom – 600/800 ppm
week 3 – 12ml Grow – 6ml Micro – 3ml Bloom 800/1000 ppm (continue week 3 formula if additional veg time is required.)

Bloom
week 1 – 6ml Grow -6ml Micro – 10ml Bloom – 800/1200 ppm
week 2 – 3ml Grow -7ml Micro – 12ml Bloom – 1000/1400 ppm
week 3 – 3ml Grow -8ml Micro – 14ml Bloom – 1000/1400 ppm
week 4 – 3ml Grow -8ml Micro – 16ml Bloom – 1000/1400 ppm
week 5 – 2.5ml Grow -7ml Micro – 18ml Bloom
week 6 – 0ml Grow – 7ml Micro – 20ml Bloom – 1000/1400 ppm

continue week 6 until harvest

A friend of mine had a set up and has never used hydro before. He made a mistake during the flowering cycle and used the bloom recipe at 1/5 th strength. Instead of mL per gallon he used mL per 5 gallons. The odd thing is, he got about 30% more yield than me. Same strain taken from same mothers, same lights, same filters, fans, grow tent...everything was the same except he used 1/5 th the nutrients. Do you think I'm giving them too much?

Dr. Who · Apr 7, 2016

Here you go @ChemPro

His lower use of high P bloom foods is most likely the answer......There is NO such thing as Canna specific nutrients! Some companies may formulate feeding charts and bottle concentrations to be more focused on growing canna but, for the most part, most don't! The G&H line is that way.....YOU need to adjust use to fit what Canna does best with (Getting as close to growth potential as you can). Called "dialing it in"....Experiment is how us "old guys" got there and many today want every short cut they can get....

So then, try this for your next run.

AT the point you flip to bloom. DO NOT change the nutrient TO bloom. Keep feeding the Veg "week 3" for 2 weeks!
At the beginning of week 3. Mix Veg and bloom 50/50 and use that for 2 weeks (Bloom week 1)!
At week 5 go to 25/75 veg to bloom (bloom week 3) and next week go 100% bloom (bloom week 6) and "see" what that does for you in the end!

I think you will be surprised at the result.......High P amounts in bloom are not really "needed" to maximize your yield.
If done properly. Growing out a Cannabis plant, it should remain green and healthy looking just about to the end....Too much P will yellow out your plant starting at the bottom and it then works it's way up, with severe case's actually effecting the buds too. This, even in minor amounts, effects bud size and end yield..

I think you just got a first hand experience on that...

Oh and by the way. Plan on running 1-2 weeks longer then breeders reports say!

When is it done?
Check this by a friend -
https://www.rollitup.org/t/are-they-done-yet-what-does-done-look-like.853978/

Good luck on your next run!
Let us know how it goes!

ChemPro · Apr 7, 2016

Yes. I've always had to add at least one week to whatever the seed breeders say. Thanks for the advice. Maybe next time around I'll do a statistical design of experiments and have different ratios of nutrients, use plants from the same mother and see if I can get an optimum feeding schedule. But, such a schedule would only be optimum for that strain right?

Dr. Who · Apr 7, 2016

Edited the above - recheck it @ChemPro

Tomford · Apr 7, 2016

Can someone possibly check out my thread to see what nutrients my plants are suffering from not having. Problems plants section

Dr. Who · Apr 7, 2016

ChemPro said:
Yes. I've always had to add at least one week to whatever the seed breeders say. Thanks for the advice. Maybe next time around I'll do a statistical design of experiments and have different ratios of nutrients, use plants from the same mother and see if I can get an optimum feeding schedule. But, such a schedule would only be optimum for that strain right?

For the most part yes.....Generally Indica's will feed one way (lots) and Sativa's tend to be fussy. That does have exceptions to the rule......I started out many moons ago organic.....I jumped into the synthetic pool and did that for a long, long time.....I restarted organics and did synthetic testing runs for another long time....I run 100% water only home built "super" soils now.

Hydro makes for great SOG's...(Rockwool)...I liked DWC, hated Coco and found Ebb buckets ok, draw back was the stupid hydroton balls......You can clean them and reuse.....BUT, they made a pretty damn fair driveway. Instead of re graveling !

ChemPro · Apr 7, 2016

If it takes 8 weeks to flower, one week to dry and one week to cure I should be smoking by June 13th.

breakdancer0003 · Apr 7, 2016

Dr. Who said:
If done properly. Growing out a Cannabis plant, it should remain green and healthy looking just about to the end

MMMM HMMMMM :bigjoint:

( little over 3 weeks in )

Dr. Who said:
Oh and by the way. Plan on running 1-2 weeks longer then breeders reports say!

I can't emphasize enough what Dr who said here, Don't get to locked into a schedule, just grow them/ dry them / cure them until they are done ( also learn what "done" is for all of those steps )
I have had plants that were "8 week flower times" that took 12 weeks I also have some plants start to finish that take 45 days from flip to chop. they also said "8 weeks"

ChemPro · Apr 7, 2016

Dr. Who said:
Here you go @ChemPro

His lower use of high P bloom foods is most likely the answer......There is NO such thing as Canna specific nutrients! Some companies may formulate feeding charts and bottle concentrations to be more focused on growing canna but, for the most part, most don't! The G&H line is that way.....YOU need to adjust use to fit what Canna does best with (Getting as close to growth potential as you can). Called "dialing it in"....Experiment is how us "old guys" got there and many today want every short cut they can get....

So then, try this for your next run.

AT the point you flip to bloom. DO NOT change the nutrient TO bloom. Keep feeding the Veg "week 3" for 2 weeks!
At the beginning of week 3. Mix Veg and bloom 50/50 and use that for 2 weeks (Bloom week 1)!
At week 5 go to 25/75 veg to bloom (bloom week 3) and next week go 100% bloom (bloom week 6) and "see" what that does for you in the end!

I think you will be surprised at the result.......High P amounts in bloom are not really "needed" to maximize your yield.
If done properly. Growing out a Cannabis plant, it should remain green and healthy looking just about to the end....Too much P will yellow out your plant starting at the bottom and it then works it's way up, with severe case's actually effecting the buds too. This, even in minor amounts, effects bud size and end yield..

I think you just got a first hand experience on that...

Oh and by the way. Plan on running 1-2 weeks longer then breeders reports say!

When is it done?
Check this by a friend -
https://www.rollitup.org/t/are-they-done-yet-what-does-done-look-like.853978/

Good luck on your next run!
Let us know how it goes!

I heard yellowing of the leaves during late flower is normal. Then again people are also saying that it's better if I can grow a plant that stays green throughout the entire flower cycle. The feeding schedule has me using none of the grow formula during late flower. Should I be using a little bit of Grove formula during late flower?

Dr. Who · Apr 8, 2016

ChemPro said:
I heard yellowing of the leaves during late flower is normal. Then again people are also saying that it's better if I can grow a plant that stays green throughout the entire flower cycle. The feeding schedule has me using none of the grow formula during late flower. Should I be using a little bit of Grove formula during late flower?

Yellowing can come on late in harvest, as far as "normal" goes....to a point. It does not "run up the branching" other then maybe the stem leaves part way.......Of course if you actually have a real Banana strain.....They have pheno's that are "yellow" from day 1.....Alarming the first time I got one!

Try following the formula I gave you... It's simple and a good starting point for you to "experiment" from after you've tried it once (That should be pretty damn close) but, yeah. The way you listed your feeding = Too much P too early! Adding more Veg maybe one of things you "experiment" with!

Remember this overall! Do it one way - take notes the whole grow! Next run, adjust what you think you should adjust and,,,take notes the whole grow! I have 43 years of growing notes. It's the one thing my "teacher" pounded into my head.

Nutrient Question

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