Nitrogen toxicity issue in 12/12, how to proceed?

Blueberry OG x Granddaddy Purple
10 clones
1.5 gallon grow bags
8 days into 12/12 cycle
2′ feet tall average
600 watts
4′x2′ closet
82 avg temp
FFOF soil w/ added worm casting
Given dose of FF Grow Big a week before flipping to 12/12 cycle

Plants have yellow/brown tips, “claws”, signs of nitrogen toxicity; rather significant
Flushed with clearex and pure water 5 days ago (3 days into 12/12)
Newest growth (smallest leaves) seem to be overcoming it, less/no yellowing on tips

Soil is dry and needs watering
Should I water with pure water or Tiger Bloom (2-8-4)?
Will the nitrogen in Tiger Bloom have a negative effect on my toxicity issue or will the significantly higher P to N have a positive effect?

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How Do These Look

Discussion in ‘Newbie Central’ started by chuckie86, Nov 25, 2015 at 10:26 AM.

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Adding top drip feed to ebb and flow veg table?

Discussion in ‘Grow Room Design Setup’ started by Beezcheeze, Nov 25, 2015 at 8:30 PM.

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Thinking about opening a pharmacy?

Discussion in ‘Toke N Talk’ started by Downtowntillman, Nov 23, 2015 at 2:14 AM.

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Flip the roles, how would America react?

How would you react if someone was following you? No gun, no mask, dont care about their religion or creed and no firearm, just someone actively following you around for reasons you dont know.

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Top bin COB comparison

Some of the takeaways:

-The efficiency gains from running at low power are real/measureable and they continue accumulating even at very low dissipation wattage.

-The CXB3070 3K AD performed surprisingly well at low-mid power, especially if you factor in the cost difference. It outperformed the CXB3590 3000K CB. I will perform the CXB3070 test again with a different COB to see if I get the same impressive performance. If so, it disagrees with the CREE datasheets.

-The CXB3590 5000K CD had a great photon count compared to all the others, but since a larger portion of its photons are blue, I am not sure if it could outyield the 3500K or 4000K in practice.

Overall, I think it could make some sense to mix the 3500, 4000 and 5000K in a flowering room to widen the spectral curve.

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Help with supplies list.

Discussion in ‘LED and other Lighting’ started by rollyouron, Nov 25, 2015 at 10:57 AM.

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Connecting wire to Ideal COB holder 50-2303CR


For some reason I thought the COB holders used screws for the electric contacts. Nope… I am looking at the Ideal COB holder’s female plug in front of me and not sure how to wire to it without a mating plug.…ll+CategoriescategoryNameResp=All+Categories

Looking at the plug itself, it seems to be common for their holders so what do I do with two holes, run a wire to each and make a Y to the driver or just use one wire? Any particular type of wire/connection that works better?

I’m guessing there’s no problems removing the wires if I want to use the holder on a different panel?


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Lights off and then on during flowering

Discussion in ‘Marijuana Plant Problems’ started by pioneer87richard, Nov 25, 2015 at 11:51 AM.

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Medical marijuana users get OK from Ontario government to vaporize anywhere

It’s okay, I have doctor’s note.

Under new Ontario regulations, that’s what people puffing on medical marijuana — “in a joint or an e-cigarette” — can now say in any public place where smoking is otherwise banned.

The exemption includes everything from movie theatres to restaurants, offices, stadiums, playgrounds full of children and more – even the legislature, Dipika Damerla, Ontario’s associate health minister, acknowledged Wednesday.

She was peppered with questions about the new rules, which leave gray areas in which bystanders – particularly kids – could be exposed to potentially dangerous second-hand pot smoke and how to prove the smoking is a legitimate medical use for cancer, severe epilepsy or other conditions.

But employers, restaurant owners and other proprietors have the right to overrule any medical marijuana smoking, Damerla said.

“As an employer or a restaurant owner you can say ‘there’s no vaping, no smoking of medical marijuana here,” she told reporters. If a person were to continue smoking “they are breaking the law.”

A restaurant owner “could ask for some kind of verification,” Damerla added when pressed on what constitutes proof the pot is medically prescribed.

“This is about the fact that somebody who’s very ill, maybe in a lot of pain, wants to use. There are many ways to take marijuana. This is one way.”

NDP Leader Andrea Horwath said she’s concerned about people being exposed to second-hand marijuana smoke or vapour, although she wants to take a closer look at the regulations.

“That’s something we need to keep in mind…we need to take a closer look,” she said, joking that if someone was smoking medical pot beside her in a restaurant that “I’ll probably eat more.”

Progressive Conservative Leader Patrick Brown didn’t quarrel with the regulations and said he wouldn’t make “political hay” of the issue.

“If it’s for medical purposes, it’s for medical purposes,” he said. “There’s not going to be an overwhelming amount of people in Ontario running out to parks to have their medical marijuana.”

The Canadian Cancer Society warns on its website that “people exposed to second-hand marijuana smoke may have many of the same health problems as people exposed to cigarette smoke, including an increased risk of cancer.”

Other studies have found medical marijuana significantly improves quality of life and pain control for patients who need it.

Damerla tried to downplay any controversy, saying there are a “very, very limited” number of people in Ontario taking medical marijuana and that allowing them to do so in public is an issue of “balancing” rights.

The government consulted “very broadly with the medical community” before approving the new regulations, she said.

A group called Canadians for Fair Access to Medical Marijuana called the policy an “important milestone in the recognition of the legitimacy of the use of cannabis as a medicine.”

“Ontario has taken a huge step forward,” executive director Jonathan Zaid said in a statement.

“Many patients, including myself, choose to vaporize their medicine, and any prohibition on vaporizer use would have severely limited the ability of patients to use their medication as prescribed.”

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