[FRANKIE1579]

Strangest thing is, this pathogen has not inhibited initial rooting. Have consistently got roots within 7 days of cutting. Makes it hard to tell for certain if they are contaminated, only way is lab tests and more money.

[FRANKIE1579]

Figured I'd post a few pics for reference.

Relatively healthy looking up top



Stem discoloration



Red/Tan roots

Hat's off to you for your perseverance. Win or lose I thank you for sharing your battle. It all looks similar to what I dealt with. My money is on it being systemic. I'm rooting for you.

[doneit]

I have been battling the same problem for 4 yrs...
Literally tried everything... umpteen 1000's of dollars spent..
Changed locations, strains etc, etc...
IT ALWAYS COMES BACK!!!

Im tagging your thread in hopes that you get some results that we could not...
I could Never 100% identify the problem however it put everyone in our area out of business...
Good luck!!!

[FRANKIE1579]

Just an update. I ended up tossing everything. The risk was too great trying to salvage potentially infected cuts.

Spent all week cleaning thoroughly, spraying every surface with a 1/50 dilution rate of Zerotol 2.0 (Hydrogen Dioxide 29% Peracetic Acid 4%). Repeated 3 times.

Next step is ozone generator at 40 mg/l for 24 hours. To use ozone generators properly the area needs to be below 70 F, maximum air circulation in room and low humidity. Ozone was lethal to Fusarium at 20 mg/l for 20 mins so I'm going overkill.

Following that will spraying every surface in rooms down with Activated EM-1 (beneficial anaerobic bacteria)

After this any rooms with active air exchange are getting Hepa filters installed on intakes. As added safety measure we are spraying ZeroTol 2.0 in the outside areas near intakes where spores may be residing. Then following that up with EM-1 as well.

RO water output will have UV sterilizers installed. Its very possible some of the spores got into the RO filter while connecting/disconnecting lines and is now residing in biofilm lining the RO units.

Every reservoir, pump, tray and water line is getting thrown away. Anything that held moisture for a prolonged period. Read this article on how much disinfection biofilm can handle. You won't get rid of it.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4879406/

Saying that, despite all these measures, I am fully aware some spores will remain. Its impossible to kill every single one. The only success stories I have read on here were from Thcvhunter, OutlawTree and CrusaderRabbit. All of them went with a fully organic/probiotic route. Pretty much accepting that the spores are still around but making sure the root zone is the most inhospitable area possible for this fungus, which is the area it needs to proliferate initially.

I also spoke at length with a consultant in the area, and heard from one of his clients that had a large operation that ran smoothly for 2 years, then suddenly, well our exact story. This carried on for 5 years. They thought the building was cursed. They did a complete tear down and fumigation and replaced most of equipment and it came back the next round. Thats when the consultant (he's a mycologist)was brought on, and he introduced them to all organic/beneficial microbes. It's been 3 years and the same spot has been running smoothly.

I'm leery of a magical solution to anything. However there are success stories regarding this from people who have nothing to gain from saying otherwise. Will carry on with updates.

Doneit, if you would be willing to list the measures you took? At least the main ones? That would be really helpful.

[FRANKIE1579]

Anyone who has done some reading on this knows fusarium is everywhere. In the dirt outside, drifting in the air, its all over in small quantities. To me the only logical explanation why people experience reoccuring problems is a combination of inadequate disinfection and inadequate prevention measures. People like you and me have a huge amount of fusarium spores in our environment after an infection. So our likelihood of reinfection is far greater. I know I grew for 15 years using salt based ferts and chemical pesticide/fungicides without experiencing fusarium.

To me the only logical way of beating this pathogen is getting your residual fusarium spore population down to pre infection levels. Then take every preventative measure in the book. This stuff isn't omnipotent. It can't be. If it was there would be no cannabis crops growing anywhere. We also have an advantage in container gardening. We can use new soil/media and pots. Most problems u read about fusarium is removing it once it has infested a field. You can't just remove all the soil. We have far more control over pathogen spread than they do. Have read fusarium should not be a substantial problem in container nurseries and gardens. Pathogen control is far easier.

Saying that, way too early for me to say. I'm taking every precaution and preventative measure in the book. Time will tell

Thanks for taking the time to come and update us. Sorry to hear you had to chuck everything, but it was probably the smartest thing to do. Sounds like you got a solid plan to move forward. Hope all goes well.
Yes, more people need to be aware of this threat, sharing info like this helps.

[King cola CO]

H202 or food grade hydrogen peroxide will fix that problem. You water is getting to hot water At 60degf with h202 problem fixed. Don't add and any organics or bacteria like caps or you will just keep making it worse. Don't feed the bad bacteria...

[KONY]

I could just be paranoid, but I feel like the people that have fixed these problems don't freely share them online. They spent so much money or lost so much dealing with this problem, then see all people with $$$ in their eyes trying to get in on the weed business and really don't want to help those people.

[King cola CO]

i had this issue several years back. Cold water and h202 will fix problem. Do not feed with organic nutrients or molasses or your just feeding the bad bacteria. Feed with synthetic/cold water and h202 till problems go away. Problem fixed....