Problem in coco veg using 6/9 GH

[inreplyavalon]

OK so i filled out the form and hopefully someone can give me some help. The plants are looking droopy and not very healthy. They are growing and the roots are white and furry.
The leaves look dark green to blue on the edges and the veins are very yellow. Here are a few pics to try and help. I added about 2ml of calmag about 9 days ago because i thought that might help because i am using RO.

THANKS for helping folks!!!




How long has this problem been going on? a week
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) no
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) Drain to Waste
What STRAIN are you growing? G13/Diesel and AfghanskunkXAfghanhaze
What was the establishing technique? (Were the seed or clone?) clone
What is the age of your plants? 4 weeks??
How long have they been in there mixture they are in now?(coco,soiless etc..) 2-3 weeks
How tall are the plants? 12 inches
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? VEG
What Technique are you using? topping
What substrate/medium are you using?(Hydroton, RockWool etc.) COCO
What is the Water temperature? N/A
What color are your roots? White? Brown? Are your roots slimy? WHITE
What Nutrient's are you using?(If growing soiless) GH flora
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* 6ml micro 9 ml. bloom 2ml. calmag
How often are you feeding? (If using soiless) every 1-2 days
How often are you giving nutrients? (If using soiless) every watering
If flowering, when did you switch over to using Bloom nutrients? N/A
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) micro then bloom
What is the TDS/EC/PPM you are using? around 700 ppm
What is the pH of the "Tank"? 5.9-6.2
Are you sure your calibration is correct on your equiptment? new meter...yes
When was your last watering? yesterday
What is your water temps? room temp
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients? each cycle
What size bulb are you using? 600 HPS
What is the distance to the canopy? 12-18 inches
What is your RH Factor(Relative Humidity)? 50%
What is the canopy temperature? 77
What is the Day/Night Temp? (Include flucutaion range) 77/65
What is the current Air Flow? (cfm etc.) 1850 cfm
Tell us about your ventilation, intake exhaust and when its running and not running ? constant 14 inch canfan max exhaust
Is the fan blowing directly at plants? no
Is your water HARD or SOFT? N/A
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? RO WATER
Are you using water from a water softener? NO
Has plant been recently pruned, cloned off of or pinched NO
Have any pest chemicals been used? If so, What and When? NO
Are plant's infected with pest's NO

 

[maryj315]

Everything sounds good going in but what about the run off have you checked the ppm and the PH also how do you collect the run off?

Pics are not very good most often dark green leaves could mean to much nitrogen but your plants do not seem to have the ram horn effect

Cal-mag has some N in it so you might look to adjust your ratios

Since you are using Heads formula i use it also go and post this in his thread he has been answering as of late

Mj

 

[Grat3fulh3ad]

only thing I can tell is that your pH is a tad high.
5.9-6.2 is not the range where 6/9 works best. I generally run between 5.6 and 5.9.
I also water my coco every day at least once, sometimes up to three times. I have a very small amount of runoff each time, a few ounces maybe. coco is intended to stay wet, but to do so must be watered often enough to keep air flowing thru the medium. When plants in coco go through wet/dry cycles, the concentration of nutrient in the soil, and the pH is cycling too.

 

[inreplyavalon]

Thanks for taking a look. The pictures are pretty poor, but i tried.

Maryj we collect our runoff in buckets. I will check the ppm and see if its excessively high. I don't think its too much nitrogen as the leaves are only dark on the outsides.

Head thanks for sticking with me through these troubles. It is appreciated. I am beginning to think i need to chill. I think you are right. They may be hungry as we stopped feeding regularly in order to try and let the roots expand in search of water. They are finally starting to pop out the bottom in numbers and so i think they are ready for some more food.

Here's my plan...let me know what you think.
4 reservoirs. Each different mixes. winner wins!

1. 6/9 with 2ml of calmag, RO water

2. 6/9 with 3-5 ml sweet, RO Water

3. 6/9 1/2 tap 1/2 RO

4. 6/9 All Tap

tap water is around 125 ppm and i thought it caused me trouble in the past but maybe i was jumping to conclusions...

 

[maryj315]

only thing I can tell is that your pH is a tad high.
5.9-6.2 is not the range where 6/9 works best. I generally run between 5.6 and 5.9.

Cool looks like we both learned something today thank you

Mj

 

[darookie2000]

Have you been flushing? Sorry, I wasn't sure what you mean by "each cycle". It looks like a bit of salt buildup to me.

 

[SMC]

I had problems with the formula too, actually I stunted the growth of two of my plants after the first feeding. I then decided to check the EC of the formula and it was insanely high for veg. I then tried half the strength and it was still high for one of the strains. So instead of 6/9 I tried 2/3 (around ec 0.6) and solved the problems.
Anyway, I decided to move on to House&Garden full line of coco nuts and will probably never look back.

 

[Grat3fulh3ad]

sorry to contradict you, SMC, but there is absolutely no way that one feeding with 6/9 stunted your plants. If your EC was insanely high then your water must've had a high EC before you started. Good luck with your coco nutes.

 

[SMC]

sorry to contradict you, SMC, but there is absolutely no way that one feeding with 6/9 stunted your plants. If your EC was insanely high then your water must've had a high EC before you started. Good luck with your coco nutes.

I mean, insanely high for the first feeding (EC was between 1.4 and 1.6 (can't remember the exact value)). Stunted strain was LSD from Barney's farm (seems hyper sensitive to nutes. I even email them asking what nute strength they give the strain because of 5 seeds all 5 had major problems unlike my other strains) and the water I use has 0.1 EC. I am also growing another two strains that didn't have major problems with the formula but they went very dark green and showed some orange spots a week later.

Anyway, the formula is very simple and good, but I think some strains need some adjustments.

 

[Grat3fulh3ad]

it's more the fact that one feeding did it.
I have fed seedlings 6/9 with no ill effects, i'm sorry to continue to differ, but if your plants were stunted, it was not due to a single feeding with such a mild formula.

The formula is very mild, compared to most nute solutions... lucas formula has nearly double the ppm...

I have no doubt that seeds from Barney's Farm grew plants which were stunted as seedlings... Also... in the thread where 6/9 is being used for the first time," H3ad goes coco", people are instructed to use diluted strength on seedlings...

If you used 6/9 full strength on seedlings then you were not following the proper regimen of the 6/9 method... Also the concentration is perfect for veg, you meant E.C. was insanely high for seedlings, I assume... in which case I agree with you, and recommend when using the 6/9 formula you also use the 6/9 method...
1/2 str for seedlings and rooting clones
full str for rooted cuts up through first half of flower
cut out micro for later half of flower (0/9)
Plain water for the last 10-14 days
Others have added bloom boosters at specific times, but I don't...