Canna coco, two foot plants, ywllowing

[giroldo]

Ok guys I have some plants under a 1000w MH on 18/6. Good ventilation and air exchange.

I fed with :
12 or 13 ml/gallon of each canna coco base A+B.
5 ml/gallon of bio boost from canna
5 ml/gallon of cal mag calimagic

I also added ph up to make my feed ph 6.5 since my runoff was between 5.0 and 5.4 when I was using 5.9 ph. Now with 6.5 ph I got the run off to be about 5.5.

The plants are about 2 feet tall and look healthy but some are yellowing slightly. Am I under feeding? I am not currently using rhizotonic from canna or cannazym, is that an issue?

 

[giroldo]

Bump

 

[giroldo]

Bump

 

[Farmer B]

You should go to coco forum. Maybe flush more till 5.5-5.9 comes out. Idk but just a thought.

 

[Tangwena]

Hi buddy i use coco and always feed at ph 5.8 forget about the runoff and never have problems, if they are yellowing from the bottom in veg I would say you need to increase the strength of feeding slowly it should solve it.
i would give the plants a good flush with half strength nutes then after a few days hit them with the new stronger nutes. Coco is dead simple if you think you have stuffed up just flush and start again.
Tangwena

 

[stoned40yrs]

X2 forget about checking runoff ph, adding 6.5 was a mistake. In bloom I only use canna coco A & B at 9ml/gal 1.0ec and nothing yellows till the last two weeks when I leach. If you flush then don't use straight water. Use 1/3 to 1/2 strength nutes.

 

[Calwax]

i also have experience with canna coco w/full line .

ADDING 6.5 was for sure a mistake, but hey, You learn through experience.

keep your food somewhere between 10-12 on your AB and you SHOULD be okay,

Always ph to 5.8 and get some run off.

what is your base water? RO or tap?

STONED, are you using RO water or tap?

All the info is correct, if you think you've messed up, go half strength

Then after a day go to where you should be. Just to validate , for anybody having issues.

I use rhizo and zyme, But I believe it may have issues in the calimagic.

I emailed CANNA to ask them, Because i was having light tacoing of the leafs .

It looked like heat stress, Canna suggested that i increase the amnt of base i was giving

it.

Now I believe 5ml calimagic SHOULD be MORE then plenty, at any given stage.

but i guess those number would vary greatly based on water source.

Im still dialing in my own personal chart for the line, and all these threads encouraging

feeding at lower amnts , hasnt worked for me personally. 10-12 @ 5ml camg should be

good. IN MY OPINION the canna line is very watered down, But highly effective in its

content. so pour up, it gets expensive.


I use ro, but im thinking of switching to tap.

 

[DONAJTHEIII]

Ok guys I have some plants under a 1000w MH on 18/6. Good ventilation and air exchange.

I fed with :
12 or 13 ml/gallon of each canna coco base A+B.
5 ml/gallon of bio boost from canna
5 ml/gallon of cal mag calimagic

I also added ph up to make my feed ph 6.5 since my runoff was between 5.0 and 5.4 when I was using 5.9 ph. Now with 6.5 ph I got the run off to be about 5.5.

The plants are about 2 feet tall and look healthy but some are yellowing slightly. Am I under feeding? I am not currently using rhizotonic from canna or cannazym, is that an issue?

View Image
View Image

Sorry im late to the party everyone but i have to disagree with a couple statements above.

I check runoff in coco its essential IMO and in my set up. my runoff matches whats going in and if its not I have an issue.

Whats your ppm/ec in your runoff ?

its way higher than your input I bet which is why your runoff PH is so low.

Cut your base nutes down and switch out the calimagic to a calcium nitrate product like botanicare or magical at half strength.


Also how tall are they and what pot size ? are you using ro water or tap ?


water with .6ec (ca/mg + base ) to good runoff. then start bumping it up slowly after a couple of feeds .8ec to 1.0ec to 1.2ec when flower comes around.


ps: no you didnt mess up with 6.5 ph thats not that bad. Definitely water that .6ec next feed at 6.0 and above ph like 6.2 and keep it up there this week and youll be golden

 

[giroldo]

The plants are looking great now. The only yellowing leaves are one or two fan leaves on the very bottom of the plants which I suspect would be from lack of light.

I added rhizotonic and cannazym as it turns out that I was just under feeding. Plants are about two feet now and growing as much as 2 to 3 inches a day. I flipped the lights on about 30 bagseed to check the sex. Also took clones of the six moms I have under a 400

 

[stoned40yrs]

i also have experience with canna coco w/full line .

ADDING 6.5 was for sure a mistake, but hey, You learn through experience.

keep your food somewhere between 10-12 on your AB and you SHOULD be okay,

Always ph to 5.8 and get some run off.

what is your base water? RO or tap?

STONED, are you using RO water or tap?

All the info is correct, if you think you've messed up, go half strength

Then after a day go to where you should be. Just to validate , for anybody having issues.

I use rhizo and zyme, But I believe it may have issues in the calimagic.

I emailed CANNA to ask them, Because i was having light tacoing of the leafs .

It looked like heat stress, Canna suggested that i increase the amnt of base i was giving

it.

Now I believe 5ml calimagic SHOULD be MORE then plenty, at any given stage.

but i guess those number would vary greatly based on water source.

Im still dialing in my own personal chart for the line, and all these threads encouraging

feeding at lower amnts , hasnt worked for me personally. 10-12 @ 5ml camg should be

good. IN MY OPINION the canna line is very watered down, But highly effective in its

content. so pour up, it gets expensive.


I use ro, but im thinking of switching to tap.

I use glacial water out of my well. 0.3ec, I feed through blumats which is why I can get away with 1.0ec probably and every 3rd day I give the plants that are in weeks 3-6 about 12oz of 1.4ec boost.

 

[stoned40yrs]

Sorry im late to the party everyone but i have to disagree with a couple statements above.

I check runoff in coco its essential IMO and in my set up. my runoff matches whats going in and if its not I have an issue.

Whats your ppm/ec in your runoff ?

its way higher than your input I bet which is why your runoff PH is so low.

Cut your base nutes down and switch out the calimagic to a calcium nitrate product like botanicare or magical at half strength.


Also how tall are they and what pot size ? are you using ro water or tap ?


water with .6ec (ca/mg + base ) to good runoff. then start bumping it up slowly after a couple of feeds .8ec to 1.0ec to 1.2ec when flower comes around.


ps: no you didnt mess up with 6.5 ph thats not that bad. Definitely water that .6ec next feed at 6.0 and above ph like 6.2 and keep it up there this week and youll be golden

Checking runoff in coco is not essential. There are probably more people growing in coco with NO runoff than with runoff. My plants do 3 months in veg and 9 weeks in bloom without ever seeing runoff. Checking runoff sounds anal to me and growing with runoff sounds like a waste of good nutes. But to each their own, that's the beauty of coco. Goodluck with your grow mate

 

[DONAJTHEIII]

Checking runoff in coco is not essential. There are probably more people growing in coco with NO runoff than with runoff. My plants do 3 months in veg and 9 weeks in bloom without ever seeing runoff. Checking runoff sounds anal to me and growing with runoff sounds like a waste of good nutes. But to each their own, that's the beauty of coco. Goodluck with your grow mate

Yeah didn't work for me sadly

Checking runoff once a week I wouldn't call anal but rather reassurance that everything's going smooth. I'm picky yes but i like to see my ladies perfect I guess I'm competitive lol either way your right I've seen the results both ways and they both work well just seen runoff results in person vs on these forums. Minimal waste of nutes when dialed in by the way.


Much respect stoned hope everything's going well

 

[Phychotron]

I've been running Canna Coco A/B for a few years now, it doesn't have enough Nitrogen for veg (they seem to think its enough for both veg AND bloom) so I just use Humboldt Nutrients Verde (16-1-2) to darken them up before the flower cycle. It also has Magnesium, Iron and Zinc, which are commonly deficient. Canna Start is completely useless, basically watered down A/B in one bottle.

I've never checked the pH of runoff and often don't drain to waste. I flush once before the 10 day P-K period and once before harvest. Reuse coco 4-5 times (Canna brand holds the 'perfect' air/water ratio) with a good dose of enzyme between uses.

I keep my feed simple:

Coca A/B
MBferts.com Vitamin Hormone Booster (replaces Rhizotonic and Boost for WAYYYY cheaper)
Big Time Enzyme
Agsil 16H potasium Silicate
Advanced Nurtrients pH- (1ml/gal at my old house, 1ml/10 gal at my new site)

I rarely check pH. I used to when i was getting the formula down but once you learn to get it close you should be fine. Organic chemistry is not an exact-ratio science.

 

[giroldo]

Phychotron - have you used at all the cannazym and the rhizotonic from canna? I may try using what you are using because the prices for the rhizotonic and cannazym are so expensive. I also agree with you on the nitrogen, they are so light compared to my soil plants.


All my plants look great now and are growing up to three inches a day sometimes now, it turns out I was just under feeding the plants. Also about ph, from my understanding anything between 5.6 and 6.0 I guess is fine. I just focus on runoff now only on plants that don't look good just to get an idea of what's going on.


I have some plants in bloom now, and I plan on using up what's left of what I have for nutrients that I just purchased. I'm going to use the a and b, the rhizotonic, cannazym, cal mag and also some bio boost from canna which I have a few free samples of

 

[giroldo]

Can you also tell me the feeding schedule you are using for those nutrients? And yeah I can not justify 60 dollars for a liter of rhizotonic,even on Amazon it's still 50 bucks

 

[Phychotron]

I used the full canna line and hacked their feed system to make it more affordable. I emailed canna a few hundred times when i was switching to their nutrients, they've got a specific reason why they do things the way they do. like the run off is suppose to keep the build up down, but its really not necessary in my experience.

The $60 bottle of MBferts' Vitamin-Hormone Boost will replace a $500, 5L bottle of Canna Boost AND $200 on Rhizotonic. $700 down to $60... you end up using it the way its suppose to be used--full strength.

Also, Boost starts out as BioBoost but they add a few of their base nutrients in the mix to stabilize it.

Veg only:
Humboldt Nutrients Verde, 1-5mL/gal depending on how green they are, Sometimes its skipped entirely for a few feedings. Great as a foliar spray, as it doesn't hold up as well as Canna's A/B, but still good for a week+.

Flower/Veg:
Canna A/B, 10-15ml/gal
MBferts.com Boost 1.5-1.87 ml/gal
Big Time Enzyme, 5ml/gal
Agsil 16H .5g/gal (mbferts.com, they also sell liquid agsil 20H i might try)

Flower only:
P-K 13-14 (week 4-5 for about 10 days ~6ml/gal or less) --I usually go only 10ml/gal on the A/B, but not always, remember to play around.



A grow log can be seen here: https://www.icmag.com/ic/showthread.php?t=300185

 

[Phychotron]

As for pH I tested it in the beginning when I was formulating everything and had it down to 1mL/gal at my old house and basically stopped testing when my meter broke. I would aim for 5.5-6 but that's not always achievable without a lot of work (unnecessary work). Because of the way Buffers work I just adjusted it real close and called it good. My new water source is using 1/10th the amount to adjust the pH because it has less of a buffer (Ca/Mg) to prevent swings and stabilize the pH. Plus now I just got the General Hydro test drops which are only as accurate as your ability to distinguish colors. I also never use pH up, just add some more silica if I over adjust too much.

Advanced Nutrients's pH down is super concentrated, whereas General Hydro (and other brands from what I can tell) is very weak in comparison.

Remember to keep your nutrient tank covered to prevent any contamination from dust/mold spores. Keep that tank as simple as possible, with little to no additives.

 

[GreenPanther]

bro take a look at my coco grow, how much watt is there? by 600w is ec 0.9 - 1.1 max ok. PH of the drain is in mine room always lower but is doesn't matter. PH of nutrient is 6.2 and the drain is 5.7
sometimes i also have 5.0, then i don't us ph - for the next two wattering.

which strains are you growing?





thats how my plants looks at flowerday 8 with ec 1.35 and ph 6.2

the little ones (6.5l coco) have flowerday 1. ec is 0.7 and ph 6.2

the little are gorilla bubble f3, the other bigger are amg haze's and amnesia haze core cut in 25l coco

 

[giroldo]

Psychotron- thank you for the tremendous help and money saving tips. You use that same regimin throughout flower and veg? I will definitely follow your journal.

Greenpanther- my mother and clone room has a 400w Mh and I'm adding a t5 for the seedlings. My flower room has a 1000w hps.

I'm running mostly bagseed at the moment but I have a white widow clone and getting a few other clones too to use as mothers .

 

[GreenPanther]

could you carry out your problem?