LR#2 yellowing leaves - please help a beginner!

[rune2008]

Problem with the bottom right plant!

Hi icmag,

I'm relatively new to this and I have a weird problem with one of my JointDoctor's Lowryder #2 plants which I can't identify the source of. My plants are 29 days since the first one popped the surface. I grew them from seed from a well established seed bank. No other plants are having this problem only this one.

The problem has been going on basically since I watered this tuesday. (Now it's sunday.) I gave them nutrients, but because of this problem I didn't give them any nutrients last night. I transplanted them to larger pots today, so I'm thinking it might be related to the plant being root bound, but I'm unsure.

The new pot is slightly larger than 1 gallon and the day temperature is 88-90F, with night temperature dropping to around 70F.

I gave them Canna Terra Vega at slightly less than the recommended dosage. (15-20ml/5 liters of water). I will be using Canna Terra Flores from now on. I'm using a local brand of soil which has won awards and is generally considered the best soil in my country for growing cannabis.

I haven't been feeding them anything before this tuesday and I don't have a pH meter. I water every 3-4 days. Unfortunately I don't know the RH but it's pretty low because I don't have a proper way of fixing that (yet).

The plants are grown under a 150W HPS bulb with 40CFM computer fan for exhaust, it's running only during the day (18/6 schedule). I use regular tap water.

Thanks for any help guys! Let me know if you need more pics and/or more information but I think most information you need should be above.

 

[stihgnobevoli]

looks like mag def.

 

[phreakerrot]

the leaves have that dark green plastic look. instead of trying to find a deficiency to match you problem you should think that maybe you overdid something, so stop feeding them and let them grow on the nutrients the soil has to offer. if you're using good soil and you just repotted you shouldn't worry about fertilizing for a couple of weeks. you should also buy a pH meter and adjust your water to 6.0 - 6.5.

 

[MickTheBrag]

right buddy its a bit of heatstress, cause 90f is way too hot. but because your acting now it should be no problem.

get cleaner air in there and a stronger fan blowing from the sides on to the tops and your grow should be fine.

 

[4herbs]

stop moisturing your box,flush the soil and then feed her properly with blooming ferts you have a lack of phosporus and some burnings on the tip of your leaves,but the issue is in the middle plant on the lowest leaves this will happen later http://img183.imageshack.us/my.php?image=p1pj0.jpg and yes please give her some more ventilation,or get yourself a cool tube!

 

[rune2008]

Hi,

Thank you very much for your replies.

I think the picture I posted above was a bit unclear, because the thing you see on the bottom leaf of the middle plant is simply soil. (Unfortunately, I was a bit messy during transplant my transplant.) It's not a mag def. OR did you mean the one to the right? Because from what I can tell that's not mag def either.

I guess you are saying I have a bit of heat stress, which would actually explain the seemingly random "drying" of leaves here and there in my grow. I will try to correct this as best I can. For now, I've adjusted my "inside fan" (the one circulating air inside my op) as to increase airflow. Unfortunately I am packed with work so I can't do much more about airflow/temperature until next week. I have an open window at all times as well to increase the situation somewhat.

Also, from what I can tell, and from what I can read from some of your posts, it seems like they're basically not getting enough nutrients. The two plants that have been in much smaller pots (half a gallon) are the ones that are showing symptoms (the two to the right) and the two to the left are seemingly just fine. I therefore decided to give them water today with a low dosage of Canna Terra Flores (5 ml/1.5 litre water), watered the two to the left, and then filled up to 1.5 litres again with water and watered the two to the right.

I never flushed them, even though some of you proposed that solution. I am unable to see the need for flushing plants that are lacking nutrients. I'm not having nute burn, am I? In that case I'm totally lost... then again, maybe I am.

Adjusting pH is not really something I can afford economically right now if I can avoid it. I just want stuff to be "fine" not "perfect" for this grow. I am open for suggestions though but right now pH doesn't seem to me like the number one priority of my grow.

I decided to post new pictures:




Thanks for any help you can give me, it's much appreciated. I'm reading the sticky thread like crazy but can't come up with anything.

Am I fine? Do I need to something else than what I am doing? Am I killing my plants?

 

[4herbs]

i think that you re fine,just try to lower your temperatures,keep the moisture low because you are now in flowering and you dont wanna get bud root,and that s it...peace bro

 

[10k]

Not commenting on the grow as I will not blow up photos hosted elsewhere.

Rune2008,
You are putting yourself at very high security risk by uploading pot pictures to outside services like imageshack.
You're much much safer if you would just upload your plant pictures here to icmag.

 

[rune2008]

4herbs, ok thank you for your input.

You are putting yourself at very high security risk by uploading pot pictures to outside services like imageshack.
You're much much safer if you would just upload your plant pictures here to icmag.

10k,
Thanks for your concern. I chose not to upload the images to icmag because I wanted to post the images in a higher resolution than was possible to do on icmag due to size constraints. I always use anonymizing software (Tor), so I feel I'm not taking that much of a risk by using an outside image host service.

http://www.torproject.org/

Also, I take the usual precautions such as removing EXIF image data.

/rune2008

 

[cyberwax]

Too high temp, possably wrong ph. I dont know the canna series very well so if someone could enlighten me about the proper ammount used mixed in water will give a perfect ph.

Aside from that you should expect some yellowing of leaves in places where light is low. And expect atleast a week before you see any significat change in the things done to the grow. You can probably spot a nute def beeing corrected after 2-3 days tho, but you dont seem more experienced than me and i can barly see it.

So advice would be: find out if canna corrects ph, then use the proper ammount as listed on the bottle, lower your temps and within a week you should be fine.