Root rot :(

T

Thcsafc

New Member
into week 6 of flowering, the buds were growing nicely but noticed the other day they started looking wilted and leaves were dying, checked the roots and they stink, and are brown and gungey....a case of root rot ...using a 20L oxypot....the buds have gone from white to going a little brownish.....i think maybe the problem was my pump may of stopped working so i have a tetra 400 with 2 stones giving her air and the guy at the hydro store suggested hydrogen peroxide so i have put some of that in as well...this is my first grow and any help would be appreciated....is the crop salvagable or have i lost it
thanks in advance
 
Doer

Doer

Well-Known Member
Too much heat favors the root rot bug, called Pythium. Your air pumps work against you. Res temp need to be below 70F.

I went to this technique, because it is use for fishkeeping and water treatment, exclusively now. The only ones that are still using air pumps are us cannabis folks. It is so wrong. If you must, go to the smallest stone and the least hot air. You are just lifting water from the bottom.

Mass transfer of oxygen only occurs at the surface across a broad area, solely by atmospheric presssure. No oxygen is tranferred directly by the bubbles. That is myth. The bubbles are too hot to allow it and the surface area is too tiny.

I have a test kit and flooming works to keep the res saturated with O2. That is also against Pytium.

Lastly you need to add some microbes to defend the root zones and add good rooting auxins to the mix. I just use a small amount of Aquashield, but there is a thread here on Microbe Tea, by Mr. Heisenberg.

Good luck.
 
Crispy Bacon

Crispy Bacon

Member
PICS PICS PICS!

youll get way more help if you take a second to post a few pictures of your problem! Don't be lazy, lazy growers produce poop buds!
 
Crispy Bacon

Crispy Bacon

Member
Doer said:
Too much heat favors the root rot bug, called Pythium. Your air pumps work against you. Res temp need to be below 70F.

I went to this technique, because it is use for fishkeeping and water treatment, exclusively now. The only ones that are still using air pumps are us cannabis folks. It is so wrong. If you must, go to the smallest stone and the least hot air. You are just lifting water from the bottom.

Mass transfer of oxygen only occurs at the surface across a broad area, solely by atmospheric presssure. No oxygen is tranferred directly by the bubbles. That is myth. The bubbles are too hot to allow it and the surface area is too tiny.

I have a test kit and flooming works to keep the res saturated with O2. That is also against Pytium.

Lastly you need to add some microbes to defend the root zones and add good rooting auxins to the mix. I just use a small amount of Aquashield, but there is a thread here on Microbe Tea, by Mr. Heisenberg.

Good luck.
Click to expand...
air pumps sit outside of the res, this would have no effect on res temp :)

oxypots are DWC, no pumps in the water
 
Doer

Doer

Well-Known Member
Are you pumping hot compressed air into the res, through air stones or not?

The heat goes in through the bubbles....get it?
 
Crispy Bacon

Crispy Bacon

Member
Doer said:
Are you pumping hot compressed air into the res, through air stones or not?

The heat goes in through the bubbles....get it?
Click to expand...
Unless his airpump is sitting on top of his ballast he should be okay, dont you think? Ive done buckets many times and never had "hot air from the airpump" be an issue...plus whats he going to do? not oxygenate the solution?

and im assuming he means a tetra 40, not 400. If so, those things are tiny. not going to produce that much heat on its own. I use tetra 100s and never had this problem...
 
Doer

Doer

Well-Known Member
Well, true. A 40 is a lot different from a 400. And really I should have said, a diaphragm pump is much cooler. But, it still adds heat.

I used piston air pumps for a while....hot.

For hydro we have to solve for Pythium. It is everywhere and sterilization is useless. It can only be defended against with:

Oxygen saturation
lower temps
microbes in roots

Need all three was my point. Also, I wanted to say that flooming with water has replaced flooming with air.



Lastly to explode the myth. Pumping air is just a way of flooming. It does not add O2 directly from the bubbles, it only lifts the water. That is defined as flooming. And I have the DO test kit and it works without adding air bubbles.
 
Crispy Bacon

Crispy Bacon

Member
I honestly didn't understand your previous post, but now I do. Very interesting, will certainly look into this before my next run.

Its on tomorrows "list of things I need to learn about"..thanks bro!
 
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