Yellowing veins?

[zaQ]

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What would cause this? I had my PH around 5.5-6.0 all the time. Growing in flood and drain system. Im feeding them with Advance Nutrient grow-micro-bloom at around 400PPM. She is 3 week from seed.

 

[zaQ]

A) Type and wattage of lights. HPS/LED
B) Distance from tops? 50cm HPS / 90 CM LED
C) Reflector type? cool tube
D) What are the bulb wattages, kelvin ratings, and schedule? 600w HPS/600w LED
E) Is there a consistent fresh air supply? Yes
F) Do you have an exhaust fan and a circulation fan? Yes
G) Size of reservoir? 230L

Your nutrients and water:
H) Source of water. Tap 5.5 - 6.0 PH
I) Specific brand and N-P-K ratio for each bottle. 1/4 Strenght AN G-M-B.
J) What is the ec/ppm of your unadjusted tap (or filtered) water? 35PPM
K) What is the ec/ppm of your nutrient solution? 400PPM
L) What is the temperature of your nutrient solution? 24C
M) Does your ec/ppm show a rise or fall when you do your daily PPM check? Steady 400PPM
N) Does the ph fluctuate?
O) Do you foliar feed? no
P) How often do you replace reservoir water/nutes? Every week

Your growroom:
Q) What size of closet, room or hut? 240x240x200
R) What are the temps and humidity levels while lights are on? 82F
S) Have you seen signs of insects in the growroom? no
T) Are the roots long and white, or brown and slimy? White

Your strain:
U) What strain are you growing? (Mi5

 

[Red eyed c]

Im not a hydro grower ZaQ,and from reading your checklist everything seems pretty sweet.but iv just checked a couple of hydro grows out,1 being seymours and at week 3 his ec is 1.6 or 800 ppm,your plant seems a little small for 3 weeks old and maybe your under feeding mate,:group: someone with more hydro knowledge will hopefully jump in

 

[zaQ]

Im not a hydro grower ZaQ,and from reading your checklist everything seems pretty sweet.but iv just checked a couple of hydro grows out,1 being seymours and at week 3 his ec is 1.6 or 800 ppm,your plant seems a little small for 3 weeks old and maybe your under feeding mate,:group: someone with more hydro knowledge will hopefully jump in

Yes i thought so too. Im added some more nutrients. Im now at 600PPM and I will raise it over the week to 800PPM.

Would be great with some more input folks

 

[Red eyed c]

Sound like a good move mate :smokebuds: if it is under feeding you should see her perk up

 

[SmashedByHashish]

it looks similar to a magnesium deficiency i would use some epson salt which can be aquired from a local box store... when using epsom i use half a teaspoon to 1gal of water

 

[zaQ]

Little update.

The problem stopped. I added more nutrient (@600PPM) and the plant double/trippled in size in 4-5 days. Im running 24 flood and drain IWS pots. Only 5 pots did have this problem. The rest is green and full of life. I guess I should run clones and not autos because of all phenotypes crawing for different nutrient elements. My ph is steady now at 5.9.

 

[Red eyed c]

Good stuff zaQ glad to here its sorted :smokebuds:

 

[Noods]

Glad you got it straightened out zaQ. :thumbs: Happy Growing dude! :smokebuds:

 

[happily]

fyi...I added some china led's and got severe vein yellowing through veg stage. chalked it up to underfeed and sulfer deficiency so epsom is also good advice. good luck