Quick - What is wrong with my plant? I have 1 plant that is doing this to me...

[MrDanky]

I have 20 plants going, and 1 of them is showing alot of leaves like this...

Any ideas?

 

[Capn]

Id have to advise you to fill out the diagnostic form they have here so people will be able to help you out more. That appears to be necrosis due to ph fluctuations or over/under feeding.

Fill out that form and I'm sure others will chime in.

Good luck.

 

[BudLove]

MrDank,

My first impression with nothing but a few pictures is: You have pH lockout along with a lack of N (hence the yellowing).

Add more Grow nutes (unless in flower, which the yellowing is to be expected) & check your pH.

 

[MrDanky]

HYDROPONICS/Aero Ponics

How long has this problem been going on? 2 weeks
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) Canna Coco.....
What STRAIN are you growing? Sweettooth #3
What was the establishing technique? (Were the seed or clone?) Clone
What is the age of your plants? 4 weeks into flower
How tall are the plants? 4 feet
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
What Technique are you using? Coco handwatered
What substrate/medium are you using?(Hydroton, RockWool etc.) Coco
What is the Water temperature? 60
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using? How much of each if using multiple?
What is the TDS/EC/PPM you are using? 1200 ppm
What is the pH of the "Tank"? 5.8-6.0
Are you sure your calibration is correct on your equiptment? Yes
When was your last watering? every other day - 1 day of nutes to 3 days of ph'd water....
What is your water temps? 60
What size bulb are you using? 600w
What is the distance to the canopy? 1 foot
What is your RH Factor(Relative Humidity)? was around 60%, now its at 40%
What is the canopy temperature? its where it needs to be
What is the Day/Night Temp? (Include flucutaion range) it was at 88-99 for about 10 days, and now its dropped to no where higher then 85
What is the current Air Flow? (cfm etc.) i have a 6inch can fan sucking through a cool tube
Is the fan blowing directly at plants? yes
Is your water HARD or SOFT? hard
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap
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

 

[PharmaCan]

Why do people buy coco then treat it like soil? You should be feeding and watering DAILY and your pH should be 5.6-5.8. Whether or not that will cure your current problem, I don't know, but it'll give you overall healthier plants and bigger buds.

PC

 

[HeadyPete]

My coco sits at 6.3, I don't feed or water every day, and my garden is a-okay. Big and healthy.

Anyway, you got a case of cal def along with N def. If they are in veg, use more grow. 600w is a lot of light and plants, especially in hydro, will grow and want the nitrogen there. Same with the calcium.

If they are in bloom then the yellowing is normal throughout the bloom cycle.

Use CalMag for the calcium def. You don't say what and how much nutes you are using, but chances are there isn't any or enough calcium in them, hence the spotting problem.

 

[MrDanky]

My coco sits at 6.3, I don't feed or water every day, and my garden is a-okay. Big and healthy.

Anyway, you got a case of cal def along with N def. If they are in veg, use more grow. 600w is a lot of light and plants, especially in hydro, will grow and want the nitrogen there. Same with the calcium.

If they are in bloom then the yellowing is normal throughout the bloom cycle.

Use CalMag for the calcium def. You don't say what and how much nutes you are using, but chances are there isn't any or enough calcium in them, hence the spotting problem.

you were right headypete... thank you for your help

 

[icough2getoff]

When was your last watering? every other day - 1 day of nutes to 3 days of ph'd water....

I would say this could easily be part of your problem. When watering in coco, you're supposed to water the same ppm every time you water.

1200ppm could be too much for some strains, especially if that's at the 0.5 conversion. When you start watering with nutrients every time I'd keep a close eye to make sure they don't start to get nute burn. If they do I'd lower it closer to 600-700ppm @ 0.5 conversion and see what happens.

I've only grown mothers in coco, but I haven't had to go above 500ppm @ 0.5 conversion yet to keep them happy while they're in veg. This is with RO water.