cater

Hydro Growers:
1. Are you growing from seed or clones? Clones
2. How old are your plants? got them 1/11
3. How tall are your plants? all around 12"
4. What type of hydro system are you using? coco medium, hand watering
5. What brand/type of nutrients are you using? GH Floranova veg, AN sensical, botanicare liquid karma botanicare sweet
6. What is the Ph of your nutrient solution? varies between 5.6 and 6.0
7. What is the PPM/EC of your tap water? 5ppm RO water
8. What is the PPM/EC of your nutrient solution? Start with RO water, raise it 200ppm with Sensical, raise it 100ppm with liquid karma, raise it 100ppm with sweet and then raise it 1100 with FloraNova Veg. Ending PPM is around 1500 (with 0.7 conversion factor)
12. Do you foliar feed or spray your plants with anything? no
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 600W HPS
14. How close are your lights to the plants? 12"
15. What size is your grow space in square feet? 3x2
16. What is the temperature and humidity in your grow space? temps between 70-85 and humidity around 50%
17. Have you noticed any insect activity in your grow space? no
18. How much experience do you have growing? 2nd grow

Heres the GDP... older leaves are green and healthy looking; new growth is green and healthy looking. It seems like the growth in the middle is yellowing a bit and showing some spots - PEEP the pics! What do you guys think?

Attached Thumbnails

     

 

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retired. didn't get caught or anything... i'm just too busy.

Luke Highwalker

seems like those cubes should be buried a little deeper... the plants just kinda floppin on its said.

anyhow im going to take a wack at this one and say you have a ph problem, probably too high.

Dont quote me on the high part however....i dont use cocoa, but other more experienced people will chime in.

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cater

Cubes probably should be a bit lower BUT im scrogging them so once they grab onto the screen it wont be flopping over anymore.

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retired. didn't get caught or anything... i'm just too busy.

CRAZYTRAIN

Loooks like a mag def to me but I can't tell you if it's from PH or if adding mag will cure it.

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Luke Highwalker

i never have cal or mag probs, so whenever i see those signs i look straight to PH. sometimes i get stoned and mix up my nutes, when the hempies get the 6.4ph they really do not appreciate it.

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cater

Interesting.. i've kept ph between 5.6 and 6.0 the whole time unless my thing is calibrated wrong.... maybe the AN SensiCal is bad?

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retired. didn't get caught or anything... i'm just too busy.

cater

problem hasnt gotten any better... been watering with 5.8ph. anyone have any ideas?

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retired. didn't get caught or anything... i'm just too busy.

Gemini5

Just curious...why all the additives...who told you they would be good?

This isn't a smart ass question, just trying to figure it out...seems like your mix is a little hot to me...but I don't really know the strain.

G5

cater

Friend gave me the Liquid karma and sweet; i was told to add calmag to RO water which is reason for sensical

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retired. didn't get caught or anything... i'm just too busy.

dman619

From the pics it looks like a manganese problem. Manganese is a micronutrient that is immobile. It assists nitrogen utilization along with iron in chlorophyll production. It also activates enzymes and is a fundamental part in the chloroplast membrane system. The deficiency will cause the younger leaves to show signs first. They first show interveinal chlorosis(yellowing between the veins) while the veins remain green. It spreads from younger to older leaves, and severely affected leaves will develop necrotic(dead) spots become pale and fall off. A severe def. looks like a mag. def. too.

To fix it you should flush the coco, keep your ph low, and make sure the nutes you are using have all the chelated micronutrients in it that mj needs.

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Happy Growing
The Dman