[issack]

Originally Posted by mushroombrew

You may want to consider new coco. Spores can linger.

I never re use coco. New every time. Next I'm trying mills coco with cork.

[issack]

Originally Posted by mushroombrew

I have always admired your grow by the way. I hope you get this figured out. It's awful when you don't know the cause.

This plant was a clone when I had the outbreak. I never treated it; recovered on its own.

This is fusarium scarring. Have a good look at your stems. You may have some lesions/slight cracking without the plant exhibiting symptoms yet...
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Thanks for all your knowledge on this . It's helped me here to troubleshoot. Appreciate the admiration on my grows. I have always been able to do very well indoors and outdoors. I'm a by feel grower. I just listen to my gut and the plants. But in situations like this I'm worthless I need you guys that are experienced with these problems. For I've never had them happen until lately. Lol I'm no scientist. I don't know all the deep stuff. I just find something and try to make it work the best I can.

Everyone who chimed in I greatly appreciate your contributing ideas. It really helps to have a discussion on this. What I have learned is air movement, and to be just that much more diligent and clean with all my res changes. And do 3 mills sm-90 and not 2. ( my theory) and smart pots on the next run. More oxygen and air to the roots. Have fans blowing under the canopy through out the stalks ( just put fans in today doing that. ) And my new A/C will allow it to hopefully be less humid while lights on. Or I could turn on one dehumidifier. Right now I can't run a dehumidifier because my AC won't keep up with it when lights are on, its too much. So I'm in the mid 80s with co2 at 1110 1200 ppm. When lights go out 2 of them turn on set at 55 60 humidity . So with all things considered I'll jist have to stay focused and iron this out . I got this.!! I think.. lol

[Anothermeduser]

I ran 6 per light in a low pressure aero recirc. system for a long time and would loose one semi regularly from what mushroom described exactly, never lost more than one or 2 on 60-80 so i didnt worry. Would have a healthy root system and healthy plant just a spot of rot near the base in the stem, just above the neoprene plug. Somtimes it was a month old somtimes almost done, never was infectious so i belive it was a derivitive of damping off

[issack]

Originally Posted by mushroombrew

Yes roots look fine fusarium affect the uptake of water and nutrients by blocking Xylem. My roots were perfect. But when I pulled the plant from media the roots stayed behind and the stalk came out clean. The infection is right where the roots meet the stalk. Have a good poke around. If it's fusarium it stinks bad.

So I just went and pulled out the root ball from outside and started braking it up and yes.!! Right where the root meets the stalk it stinks bad. And it's all brown and rotted. So yes this is what it is.!!! I'm just going to be completely anal and clean my res every 3 days now or something.. Fusarium is what this is. You nailed it.

[mushroombrew]

Originally Posted by issack

So I just went and pulled out the root ball from outside and started braking it up and yes.!! Right where the root meets the stalk it stinks bad. And it's all brown and rotted. So yes this is what it is.!!! I'm just going to be completely anal and clean my res every 3 days now or something.. Fusarium is what this is. You nailed it.

That sucks. But glad you know what it is. Rank smelling or what?! Look into the amerliorating effects of Potassium Silicate on Fusarium.
And sanitize everything diligently prior to start up. Also important to let everything dry out before start up. Flush lines. Scrub pots and trays. Good luck!

[mushroombrew]

I used 10% bleach right at the infection and saved plants. But you are close to harvest so maybe you will make it?
Any strong oxidizer will work.
Bleach at base and pro tekt saved my grow.

[mushroombrew]

Whats up with your reservoir? Air? Water temps?

[issack]

Yes that smelled horrible.. Yes I'm too close to harvest to try anything drastic. I don't think I could ever use bleach.? Dude. That's like the scariest thing I've ever heard. Lol. So pro tekt from dayna grow.? Add to my feed solution.? What rate and what's that help do. I'll go resaerch that potassium silicate on Fusarium now.
I don't clean my lines between grows. I rip them out and make brand new ones.. i tried last run to flush them and all kinds of shit kept coming out. so I decided I'm always just going to make a complete new pipping and drip lines everytime..

[issack]

Originally Posted by mushroombrew

Whats up with your reservoir? Air? Water temps?

Water temps are 64 on a chiller.. Air in the room is in 80s and about 85% humidity with a co2 burner going. 55 humidity at lights out when my dehumidifiers kick on.
I'm sitting here reading that dry weather and low soil moisture encourage this disease.. So I guess I'm not over watering.?

[microbe]

bonjour issak..ne soit pas effrayer d utiliser l eau de javel. tous est dans le dosage. pour info je l utilise de facon reccurente ( 1 fois par semaine a chaque changement de res) car j ai moi aussi affronter le pythium et fusarium, qui sont des ennemis redoutables. si j etais a ta place , je vide le reservoir , je refais un nouveau avec 10ml d eau de javel pour 20 gallons d eau. puis arroser avec ca pendant 4 a 5 jours sans nutrients. puis reprendre l arrosage avec nourriture + javel a demi dose jusqu a la fin (recolte) bonne chance