Strange problems with plants in DWC. Pictures of leaves

[stealthpackage]

OK, so I've got three plants under 600W HPS in a bubble bucket system. Using Holland Secret nutes by the book, pH sitting at between 5.8-6.2. There seems to be two different problems. The one in the center of the three is exhibiting some kind of weird bleaching on some leaves in the middle of the plant. I don't think it's from light, as the plant is about 2 feet from the lamp, and one of the affected leaves is hidden from direct light. Here's a pic:


The other two seem to be having some kind of nute deficiency or possibly a toxicity, and I'm not sure what it is. The pH is watched pretty closely, and I'm pretty much excluding that from a list of possible causes.







The vast majority of leaves are not affected by anything, just the larger fan leaves toward the bottoms of the plants. I'm watching for it to move up the plants. I've had the plants leaching for the past day. Just pH balanced water in the reservoirs, so hopefully if it's a toxicity thing, that will be worked out, and I'll be able to start from scratch. I will be putting them on their Week 2 flowering nutes tomorrow, so that gives 2 days of leaching. Sound good to you guys? Please help me out here. I'm on my first grow and am feeling pretty good about it all in all, have been spending the vast majority of my time keeping these girls going, and researching all kinds of stuff. I just can't seem to diagnose the problem, even after checking the sick plants guide. Thanks a lot, everyone!!

 

[stealthpackage]

Also, could any of this be caused by a tobacco juice/neem/crushed red pepper juice solution that I sprayed on them a while back? I was afraid I had spider mites, and sprayed them down once a day for about 4 days, until I found out that it wasn't spider mites. The problem that I misdiagnosed as mites has remained, though!

 

[Scorp1on]

High stealthpackage! how ya doing?

I can't really help you but I kinda got the same problem!

I got 45 seedling in veg(9 diff strain) all 3week old...and on some strain im seeing the same problem you got...

Those pics are 1-2 week old...the ''bleaching'' kinda stopped but I dont know what caused this...Im thinking too much CAL-MAG(im using pure blend pro with LQ and CAL-MAG). Also I think its 1 problem not 2!



I also thought it was light bleaching but my light is 6 inch away and very cold...I stopped the CAL-MAG and liquid karma with every watering, look like everything is ok for now ! Peace

 

[stealthpackage]

Yea, that problem does look similar to mine... When I take pictures of some of the areas that are affected on mine with a flash on the cam, as you had on your pics, it looks exactly like the damage on the left hand side of your pictures number 1 and 3... The middle one looks slightly different, but yea... Hopefully someone will throw in their 2 cents and we'll be able to solve this issue... I think I'm going to use slightly weaker nutrients when I refill my buckets tomorrow afternoon, and I'll see what happens. I've gone through every problem other than nutes that it could be: pH, airflow (circulation), light bleaching or heat stress, pests (nope), room or res temps, oxygen to the roots... I can't figure it out. Kinda bothering me!!

 

[sproutco]

I think I'm going to use slightly weaker nutrients when I refill my buckets tomorrow afternoon

This is what I was going to suggest.

 

[stealthpackage]

I decided to put in full strength nutes, and will add 1L into the 14 that are already in the buckets tomorrow morning to dilute it some. I was going to do it tonight, but 7:30 came too soon, and they're sleeping right now. So, the morning it is. Hopefully that two day leach did them well and they will pick back up and rock it through the next 7 weeks!

 

[stealthpackage]

I added some water to the buckets yesterday, and in the days following the 2 day leach then new slightly diluted nutrients, the plants seem to be doing well; hopefully the problem will not spread up the plants. I went ahead and sliced off some of the most affected leaves, they won't be doing anything for the plant, and I don't want the plant to try to repair itself, it was only a few fan leaves. I attribute the leaf problems I was having with the nutrients being slightly too strong, somewhat to a problem I had a couple of weeks ago with high pH, and cleaning the buckets with bleach, which I will never do again. I hope this can help someone out. Thak1lla, if you think any of those things I just said could be affecting you, work with it and you'll get it figured out! That's the cool thing about growing weed, any problem can be fixed in one way or another! Week 2 of flowering is moving right along.
Peace to you all.

 

[Scorp1on]

yea I think my problem was because I added too much cal-mag and or LK right now they are doing good...it doesnt seem to spread anymore...

 

[dre86]

Also, could any of this be caused by a tobacco juice/neem/crushed red pepper juice solution that I sprayed on them a while back? I was afraid I had spider mites, and sprayed them down once a day for about 4 days, until I found out that it wasn't spider mites. The problem that I misdiagnosed as mites has remained, though!

Did you spray them during the night cycle? Or with lights on?

 

[stealthpackage]

I sprayed them just before night cycle. Sort of regretted it afterwards, but I have read around that that's the time to do it... Was I right in doing so??