Is it time to give up on her?

[Staroftroy]

Ok. I didn't want to have to post in the Plant Problems section again but here I am.
So I'm still having the same brown spotting on my white widows. I started with 4 and lost 1 to this weird leaf browning thing. Luckily I was vegging this random seed I'd gotten and just switched it in so that I could have 4 plants under two four hundred watt lights.

I tested the Ph at 6.5. The N was very high and K very low. I used a home soil test kit from the hardware store around the corner so I'm not sure how accurate that is. Oh and my potash was normal.

Temp goes from nightime "74f-85f" and daytime "81f-95f"

She doesn't seem to be growing anymore and it looks like she's trying to grow new leaves to replace the old ones. I've flushed her with just plain water for 2 weeks. This is the day seven of the third week into the flowering cycle. Someone on [the other thread here](https://www.rollitup.org/marijuana-plant-problems/374825-brown-spotting-leaves.html) thought it might a N deficiency and nutrient lock. That sounds right to me.

I'll have two white widows and one randomn plant under 800 watts if I throw this one out. I posted a picture of a healthy white widow to compare to the scraggly one.

Any advice would be great. Thanks Rollitup!


The first three are the problem. The last one is the best for comparison.

 

[Phillip J Fry]

95 degrees is hot

 

[Staroftroy]

95 degrees is hot

Yes. It rarely gets that hot. It's pretty steady around 90 and on colder days (I'm piping air in from outside) it stays around 80-85. I can't figure out a way to fix it. It was pushing 100 everyday so I added another vent fan and an oscillating fan and that cooled things down.

 

[mistaphuck]

if you said your k was very low I would take care of that since its more important to a flowering plant, and two weeks is really long for a ph flush

 

[napa23]

First, 95 is entirely too hot. Second, whoever told you N deficiency was just wrong. Yours leaves would be yellow and wilting without spots. I'm not sure what it is though. I don't want to give advice if i'm not sure, sorry

 

[Staroftroy]

if you said your k was very low I would take care of that since its more important to a flowering plant, and two weeks is really long for a ph flush

Thanks. I added a tiny little bit of Beastie Bloom(0-50-30) from Fox Farm to the watering a few days ago. Like 1/4 tsp per gallon. I'll do a regular dose tomorrow and cross my fingers. Is there anything besides bananas that I can add to up the K?

And do you know if that would be the same reason the leaves are crackly?

 

[9867mike777]

Do you really need two 400 watt lamps for only four plants? I've grown ten or twelve in the past under one 400 watt and they did spectacular. Switching to one would certainly cut down on heat and save electricity also.

 

[2amhigh]

use cfls bra. they are cheaper dont cause heat and easy on ur electric bill. its simple, ppl who say they dont work good are screwed up. ive used them b4 and they work fiine.

 

[Staroftroy]

Do you really need two 400 watt lamps for only four plants? I've grown ten or twelve in the past under one 400 watt and they did spectacular. Switching to one would certainly cut down on heat and save electricity also.

You must teach me how to do that. I grew 12 plants under those two 400watt lamps and grew the shittiest fluffiest bud ever. Well, it wasn't mech but it wasn't good either. After that experience I'll be following the 200 watt per plant rule.
Are you growing SoG?

 

[skunky33]

Don't give up. It looks like magnesium def. get some epsom salt- the cheap shit that old people use to soak their feat. Make sure it doesn't have any chems in it or apple cinnamon scented crap put in a couple tbl spoons a gallon and wait 10 days.

 

[Phillip J Fry]

are you using the right spectrum to flower with? If I am not mistaken fluffy buds have to do with the type of light and how much penetration it has.

 

[Staroftroy]

are you using the right spectrum to flower with? If I am not mistaken fluffy buds have to do with the type of light and how much penetration it has.

It was on a past grow. I was using HPS lights and you're exactly right. That's why I'm skeptical about someone growing 12 plants under a single 400 watt HPS light and growing some dank. If you have 12 plants growing under one or even two 400 watt lights they all aren't going to get as much light as they need. A couple of the plants that were rotated closest to the lights grew some dank shit but all the others were fluff. We called it Blue Cloud cause it was so fluffy.