eperienced growers, please help with ongoing problem

Randm said:

Just checked the ppm. I got a reading of 150
also the ph is around 6.5 ( I just have test stips so its not the most accurate measure, I'd say between 6.7 and 6.3 )

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then the ph is not the problem...i have had similar looking problems in the past as yours...orange/rust looking spots on leafs that eventually turn necrotic and crispy...it was when i ran out of ph down and gave them a couple weeks worth of straight well water...the water is high..around 7.9 for the ph..the tds meter was 85 ish and after a week those were the signs that started showing...i added cal mag plus to the feeding schedule and bought more ph down and the problem was fixed in ten days.it was not bugs or disease..it was a lockout due to high ph or just missing cal/mag...

Update on mystery borg:

I cant post any pictures at the moment but I have been treating with Seranade to see if its a fungas I am fighting. I also did a foliar feed 2 days ago. As well as pruning off any leaves that appear infected.

Been thinking about the H20 from my well water, as mentioned by Massa in one of the previous posts. I may have to take a sample in to be tested. I'm kind of putting that off for the moment as I want to eliminate any other possible causes, as they charge a bunch to have it done.

I am going to be running a little experiment to see if I can isolate whats going on. Since my young plants are in my living room at the moment, and my grow room and flower room are empty, I thought that this would be the ideal time to do a complete bleach water wash of both rooms. I also gave the rooms a bombing with Dr.Doom.

I started some Master Kush seeds and will be keeping them segregated from all the other plants to avoid possible contamination. Also I will be extra vigilant to sterilize any and all tools, pots, etc. befor I use them. As an extra precaution I will be getting a couple of new bags of soil so as to eliminate the possibility that I have something that is being introduced from the soil I have been using.

Outside of getting a RO filter ( need more cash ) I can't figure what else to do here.

The girls are looking pretty good this morning though. Healthy looking leaves, good color. After trimming the infected leaves off anyway.

Thanks too all who are tracking and responding to this thread. As I am pretty much out of ideas and am getting a little frustrated and desperate, the input is really a big help.

Mystery Borg, The Search for a Cure:



Pictured are all of White Rhino seedlings and youngsters.

I again gave my plants a Seranade treatement (yesterday) and removed badly all affected leaves. This morning I checked my babies and saw a few more affected leaves, , I may have missed them or they happened overnight. I will be giving them a weak nuteing today when I water as well as a little epsom salts for cal & mag.

I germed 10 Master Kush, and placed them into strerilized dixie cups in my grow room. The idea being that if the segregated Master Kush show signs of this mystery ailment, after never being in the proximity of the infected plants, and having taken the utmost caution to wash everything that comes in contact with my babies, then I have to blame the problem on something that is common to all the plants, like water quality/purity, or something that is just airborn around this neck of the woods. I used a brand new bag of potting soil also. Organic Roots 707.

I have a hard time accepting the fact that the whole area is somehow affected, as I had no problems, like this anyway, on my last outdoor run. ( And I used the same water source for my last outdoor grow as I am using now.)

So now I am just waiting for my Master Kush babies to pop and see if they show any of this mystey borg, and continuing treatment with anti-fungas stuff of my main crop of White Rhino and THC Bomb.

Damn, I was hoping somebody else had experience with this as well. I can't believe that I am the only one in the Canna Kingdom to have had this happen.

My location ( if it is an enviromental issue in my area and if it will help) is in the Sierra Foothills in Northern Calif.

Thanks again to anybody who might have any ideas on this, and suggestions as to what else I may be able to do here.

Update on Mystery Borg:
Yesterday I went through and removed all infected leaves and checked the plants over for general health. They seem to be doing better, but I still saw a few new signs this morning. Just a couple of plants though. I removed the infected leaves. Saw spider mite signs so I treated all of the plants with Organiside to eliminate that problem. I was a little hesitant to do so as the plants may have been a bit stressed from combating the Borg, but I figured that an ounce of prevention.....

The good news is that they are all growing well, took to topping and fimming very nicely and are putting out lots of new growth.
I'll be keeping them in isolation untill I am sure that the nasty is all gone, or at least manageable. I don't want to put them into my flower room until I know I have a handle on this thing for fear of contaminating my flower room. They are getting to the size that they need to be to go under the screen, and I am trying to manage that with muliple toppings to keep them at a lower profile and to encourage side branching and multiple colas.

I had 8 out of 10 Master Kush 'pop', and placed them into organic roots 707. They are completely isolated from the contaminated plants ( a converted shed ). When I checked on them this morning the room temperater was awfully low, around 50 deg. f. but they are on a heating pad so I don't think any damage was done. As these are a 'control' grow, I'm not to terribly worried, I just want to see if they get contaminated somehow with whatever is attacking my main crop. This generally shows up on the first set of real leaves so if they are clear, then I know it is something that is passed from plant to plant rather than some kind of enviromental factor.

No picts today, as they would not really show anything new anyway.

Has anyone said calcium deficiency? google it in images...

i might need som magnesium too? so cal mag might do it.

Corso312 said:

what is the ph of the water you use on the plants?...to me that looks like some plants that suffer from several waterings from a ph'd water that is too high in the 8.2 range... do you supplement calcium n magnesium as well?

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yeah..cal mag has been mentioned..in my opinion it is the most common plant problem i see...and epsom is ok but nowhere near as effecient as calmag plus..best 12 dollars i ever spent.

I'll be getting some cal mag after Christmas when the hydro store opens. I just have a hard time believing that plants so young, in fresh commercial potting soil, could somehow be deficiant in Cal or mg. I would figure that this would show up later when they use up that which is already in the soil.

Updated Pictures:



As You can see, They look pretty healthy, considering all they have gone through anyway. I've trimmed all the infected leaves off, treated for both spider mites and fungas ( Multiple times for fungas, once for spider mites) .

If you will notice, on the third picture, on the right hand side, I have 4 plants that are putting out flowers already, none of the other plants are doing this. I haven't even been able to sex most of them yet. Do you suppose that they are reacting to the stress they have been under and are in a hurry to reproduce? Or am I worring needlesly? I know that the various strains I have grown befor all seem to have their own timetable on when they will show their sex, and even some differences within a set of the same strain. But I haven't seen an instance of this happening befor. The lights are on 24/7 and I just raised the lights. They where around 1 1/2 inches to 3 inches from the tops of the plants.

Just another piece of the puzzle....

I'll get some cal/mag and the next time the soil dries out I will give it a shot of that.

Thanks again for looking. I really, REALLY, appreciate it.

My Conclusion: Mold of some kind.

After all the treatments, and observations, my conclusion is that this is some kind of mold or fungas issue. After treating with Seranade and Micro-Blast (foliar feeding) And removing any infected leaves, and reading of other people who have experianced identicle problems in this and other growers forums, I have come to the conclusion that what I am experienceing is a form of Rust Mold/Fungas.

I read in another forum that there are literally thousands of varieties and species of fingasas and molds that will attack Marijuana.
I know that a healthy plant can fight off a certain amount of abuse, but constant vigilance and treatment with a good fungaside ( or 2 ) is the only real treatment. I just figure that I will be treating my babies as long as they are alive. My big worry is in the last couple of weeks befor harvest, when the plant is weaker and more succeptible to infection. If I continue to treat them once a week I think I will be ok though. We shall see anyway.

I would like to thank all those that offered advice and counciling on resolving this issue, I don't know what I would do without the good people at RIU and thir assistance. Thanks folks.