black leafs.. not lookin good

[TheMidnighter]

I have a plant that's showing a very bad case of this, I don't know what it is. It's leafs are turning black, and it's drooping like hell. Leafs feel healthy aside from the look.. A few others are starting to show black on their leafs ... getting worried

TheMidnighter Reviewed by TheMidnighter on 09-01-2009. black leafs.. not lookin good I have a plant that's showing a very bad case of this, I don't know what it is. It's leafs are turning black, and it's drooping like hell. Leafs feel healthy aside from the look.. A few others are starting to show black on their leafs ... getting worried :( Rating: 5

[headshake]

I have a plant that's showing a very bad case of this, I don't know what it is. It's leafs are turning black, and it's drooping like hell. Leafs feel healthy aside from the look.. A few others are starting to show black on their leafs ... getting worried

fill out the troubleshooting form in my sig.

-shake

[TheMidnighter]

What is your experience level? (first timer, novice, experienced...)
this is my second time

Your Equipment:
.1) Type and wattage of lights. 12 hour; 1000w HPS, 12 hour; 2 20w flourescent
.2) Distance from tops? 1000whps; 5 feet, others; 3 ft
.3) Reflector type? enclosed reflector,
.4) Is there a consistent fresh air supply? yes, air conditioner + fan
.5) Do you have an exhaust fan and a circulation fan? with the air conditioner
.6) What are the bulb wattages, kelvin ratings, and schedule? 12 hour; 1000w HPS, 12 hour; 2 20w flourescent. 3200k kelvin I believe for the hps

Your medium:
.7) Specific brand and type of soil; coco soik, using their nutrients as well, not mixing anything with the soil
.8) Size of container; 1 gallon
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings?; tried it, have had better success with soil

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting?; tap, un filtered. PH before adjusting is low, I cannot recall right now.. 4.7 I believe
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...); test strips
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...); PHup, the chemical
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. "Coca 'A'", "Coco 'B'", "Coco Canazym", "Coco PK-14".

N-P-K
Coco A: 4 0 1
Coco B: 1 4 2
Canazym: .01 0 0 (it's a plant extract)
PK 14: 0 13 14
The PK 14 only goes in during a certain cycle.. this is not this plants cycle.

Values are 6ml of each per galon. I use 2 liters water, dosages scaled back, each diluted before mixing the next


14) How often are you watering between feedings, and how much per watering? I wait until the soil is dry down about 2-3 inches
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...); No
16) Are your ph levels stable, or do they fluctuate? they're stable, I have phUP to fix that
17) What is your ingoing water's ph? ...your runoff ph? in going aims for 6.9-7.1, really never tested run off.. I will though
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? I do, just with water. I do it maybe 3-4 times a day when the leaves are dry

Your growroom:
19) Indoors or outdoors? in doors
20) What size of closet, room or hut? 12x18x12
21) What are the temps and humidity levels while lights are on? ...With lights off? temp on; 80, humidity 46% temp off, 72, humidty 40%
22) Have you seen signs of insects in the growroom? no, I keep a close eye

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) Purple Haze
24) From seeds or clones? This particular is from seed, but it is infecting one from clone
25) Is this an autoflower strain? no

[headshake]

you got any pics?

why the HPS 12 hours and the two CFLs for 12? are you trying to flower the plant or what?

why do you have the HPS five feet away?

why are you using coco nutes for a soil grow?


-shake

[TheMidnighter]

you got any pics?

no, sadly. I will be able to provide some tomorrow.

why the HPS 12 hours and the two CFLs for 12? are you trying to flower the plant or what?

No I'm not, it's only 17 inches high

why do you have the HPS five feet away?

The bulb is warm as sin, 5 feet seems to be a good spot

why are you using coco nutes for a soil grow?

"coco" is the brand name of the soil and nutrients. I don't know why I wouldn't use it, there's books of using them together?

[headshake]

is this what you are using (plus the others)?

-shake

[TheMidnighter]

is this what you are using (plus the others)?

-shake

yes that's it.
it's spread to the mother and the second plant is looking worse than it did when I first posted that message =(

[carinia]

Is it fuzzy or just wilted dark black spots?
Im sure your poor girls arent getting much light with that thing 5 feet away! Shake was more asking why arent you running the hps all day or at least 18/6. Are you splitting up the cfl time and the hps time, or do both of those run at the same time? Sorry, Im a bit confused about your lighting scheme as well.

How old are the plants? And you said they are 17 inches? Where on the plant is affected? (old leaves, new leaves)? and runoff ph?

Also, why are you foliar feeding water? That can actually leach nutes out of your plants and can DEFINITELY help mold growth get started! You said its infecting the clone? How many plants is this affecting and how?

[headshake]

yes that's it.
it's spread to the mother and the second plant is looking worse than it did when I first posted that message =(

you are aware that those notes are for coco coir, right?

could be contributing to your problem.

you need to invest in adequate cooling or the 1000W is basically a waste.


-shake

[TheMidnighter]

>>>Is it fuzzy or just wilted dark black spots?

Just wilted dark black spots, I got the feeling it was mold unfortunately, as it was spreading so fast I had to chop down 2 plants and trim the mother.

>>>Im sure your poor girls arent getting much light with that thing 5 feet away!

No light 5 feet away from a 1000w HPS bulb? They're getting more light then they know what to do with I'm sure, most people use a 400w around here. Could you explain a bit more?

>>>Shake was more asking why arent you running the hps all day or at least 18/6. Are you splitting up the cfl time and the hps time, or do both of those run at the same time?

Unfortunately I only have one HPS bulb right now, so I'm flowering a few plants with it and moving the other ones to cfl for the remaining 12 hours.


>>> How old are the plants? And you said they are 17 inches? Where on the plant is affected? (old leaves, new leaves)? and runoff ph?

Plants are about 6 weeks old. Old leaves and new leaves are affected, runoff PH will be tested tonight or tomorrow.

>>> Also, why are you foliar feeding water? That can actually leach nutes out of your plants and can DEFINITELY help mold growth get started!

Are you serious? I had no idea about this to tell you the truth, I've always misted the plants, I heard they loved it.

>>> You said its infecting the clone? How many plants is this affecting and how?

It started really bad with one plant, spread to a second very quickly.
It's turning the leaves black, and wilting them badly. They are also drooping down to the stalk.


@shake:

>>>you are aware that those notes are for coco coir, right?

Are you saying I shouldn't be using any Nutrients? This soil comes with ZERO additives. That was the selling point, the soil starts at Neutral.

>>>you need to invest in adequate cooling or the 1000W is basically a waste.

I've got air conditioning and fans with an intake and exhaust, keeps the temperature perfect. I do want to switch to 2 400w bulbs, one for 18/6 and one for 12/12.. just gotta get the $$$ flowin first.