Need help, deficiency problems. pictures

-Hydro Grows-

What is your experience level? (first timer, novice, experienced...) -- First grow

What type of hydro set-up are you running? -- Coco, drain to waste

Your Equipment:
A) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) -- 2 600w hps During veg
B) Distance from tops?. -- Roughly 35 cm
C) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) -- Bat wing
D) Is there a consistent fresh air supply? -- Yes
E) Do you have an exhaust fan and a circulation fan? -- Yes
F) Size of reservoir? -- 60 Litres

Your nutrients and water:
G) Source of water. (tap or filtered) -- Tap
H) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. -- Can't remember exact dosage off the top of my head but it's a little less as per directions on the bottle to cater for EC, Nutes are House & Garden A&b, Canna rhizotonic , Cannazym , Gro-tek pro silicate, Cyco B1 boost and Cobra
I) What is the ec/ppm of your unadjusted tap (or filtered) water? -- 0.2
J) What is the ec/ppm of your nutrient solution? -- 1.8 in res and 1.4 from run off
K) What is the temperature of your nutrient solution? (high and low temps) -- Constant 20 Degrees Celcius
L) Does your ec/ppm show a rise or fall when you do your daily PPM check? -- No
M) Does the ph fluctuate? -- Yes upwards from 5.6 - 6.1 over a week
N) Do you foliar feed? If so, with what, how often, and at what time do you
spray? (Just after lights come on, just before they go out...) -- No

Your growroom:
O) What size of closet, room or hut? -- 2.8m long, 1.8m wide and 2m height
P) What are the temps and humidity levels while lights are on? ...With lights off? -- Lights on 27C with 45% humidity, Lights off 17C with 75% humidty
Q) Have you seen any bugs in your growroom -- No

Your strain:
R) What strain are you growing? (Indica dominate or Sativa dom?) -- indica dominate
S) From seeds or clones? -- Clones

Hi, i think i am having a deficiency with my two plants, During veg growth some of the lower leaves show yellow spots,some browns spots and only one or two showing some white spots(could possibly be a very pale yellow but it does look white). There are a couple of top leaves showing some small yellow spots but only a couple. Some leaves(top and bottom leaves) also seem to twist and "canoe" at times, and more recently in the last week around new growth at the budsites. The majority of the plants looks really healthy but it has very slowly gotten worse over the period of vegging. These plants have been vegging a bit long(2 months) and are over due to change the light cycle, but i'm just a little worried about these problems before i turn it.

Any ideas?

Pictures attached

Thanks.

More pics...

Anyone? any suggestions would be apperciated!

Looks WAY overdue to change to 12/12. Do that now. The 75% humidity during the night cycle is too high, you'll want to dehumidify or exhaust to remedy this.

I can't really see any reason why the plants leaves are growing like that though, other than possibly no exhaust/fresh air at night. Switching to 12/12 may help, it changes the plants growth patterns... you should see a surge of growth followed by a slowdown, then bud set...

I live in the desert and came across this stuff called Silica Blast. Silica is supposed to help plants better tolerate heat, so I figured I'd give it a try. The stuff was an amazing 10.5 ph, so I had issues with it from the word go. My water is already 8.0 ph. Twas a bitch to use and it stunted leaves. Perhaps it's in this stunting that the stuff works. Don't know, don't care any more, lol. Still have all but 3 doses of stuff around here somewhere...

And did someone recommend all those additives, or are you following a recommended schedule? Geepers. Seems cannabis would be cheaper in a dispensary. Like I said, I'm not a hydro guy, but it seems like a bit of overkill.

Besides your nutrients...
Cobra - Beneficial bacteria, B1, vit-C, kelp, humates
Gro-tek pro silicate - yup, silicate formula for heat tollerance.
Canna rhizotonic - more Beneficial bacteria.
Cannazym - Enzymes, more vitamins, desert (aloe?) extracts
Cyco B1 boost - (wow that's expensive...)
"Cyco B1 Boost helps to stimulate the growth of roots in new plants and can assist at any time in a plants life cycle, with root regeneration where the root system has been damaged or stressed through high salinity, pathogens, nutrient deficiencies and toxicities.
Note that this only occurs when the foliage of the plant is unable to produce sufficient supplies.
B1 is seen as an â??insurance policyâ?� as it is difficult to determine if a plant which has come under stress is capable of producing sufficient B1."
(from Cyco B1 Boost info here

Perhaps you should read this:
Vitamin and B1 myths

Learn to walk before you learn to run. Life is easier that way. :thumbsup:

Dorej113 - yeah i had vegged way longer than planned and going 12/12 tomorrow.
i'll try my best to get the humidity down at night, can't afford a dehumidfier so i'll see about running some better exhaust.

Rusty - Yeah the Cobra, Rhizotonic and cannazym are in a schedule i was given and the pro sillicate and B1 came recommended. I know it's a lot to have especially on the first grow but it had been all recommended so i decided to have a crack.

Quote:

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Originally Posted by bezzzo

can't afford a dehumidfier so i'll see about running some better exhaust.

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Circulation and exhaust. Almost always a good idea. :thumbsup:

Quote:

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Originally Posted by bezzzo

Rusty - Yeah the Cobra, Rhizotonic and cannazym are in a schedule i was given and the pro sillicate and B1 came recommended. I know it's a lot to have especially on the first grow but it had been all recommended so i decided to have a crack.

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Personally, I'd double-check (search) the Growlog or Hydro forum, and see what other's with success are using and doing with their Canna line of products. I'm not familiar enough with hydro to offer an experienced opinion, but a couple of your products do pretty much the same thing. (with perhaps slightly different ingredients) Did you read the link I posted about B1 and vitamin myths? It's from the head of horticulture at Washington State University. I'm guessing her doctorate credentials qualify her for proper respect, and her articles have never let me down.

A couple of good things about keeping it simple:
...It's easier to narrow-down a diagnosis when something goes awry. If you are using 10 different additives, after a while, you'll be looking for more products to counter the issues caused by the use of the original additives. An expensive and unnecessary cycle-of-doom.

...It's much easier to dial-in your schedules and techniques.

...For a newbie, there's no such thing as growing the most potent cannabis in the world. Tiz folly to chase that dream until you learn to grow. However, as your experience level rises, the quality of your meds increase exponentially.

...You can grow top shelf cannabis without taking out a second mortgage.

But to me...most importantly...Simplicity eases stress. :thumbsup: