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Author Topic: Slime / Rot / Mold growing on roots  (Read 5643 times)
quickzilverfox
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« on: September 23, 2008, 10:03:19 AM »

I have three AG Pro 200's and two Mini3's and I am seeing what looks like a slime or mold on the roots themselves and black mold on the seed pods under the grow surface (I'll try to post pics later).  I noticed this when moving a Mini3 that has been growing very poorly and the slime is literally covering the entire pod and inside the plastic cage.

I've noticed some white fuzzy mold on my roots in my Pro 200's (only on the upper sections, not in the water) but have ignored it till now as the plants are doing fine and some mold is naturally present on some roots to aid in the uptake/conversion of nitrogen compounds.

Any thoughts or suggestions and ways to treat the slime/mold situation in the Mini3?

 Huh Undecided
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« on: September 23, 2008, 10:03:19 AM »

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Ellen
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« Reply #1 on: September 23, 2008, 01:49:09 PM »

Does this thread help Alex?

http://www.aerogardengrowers.com/index.php/topic,423.0.html
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quickzilverfox
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« Reply #2 on: September 23, 2008, 05:03:13 PM »

Doesn't help...it's a slime on the roots...can't use the peroxide.
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Cliff
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« Reply #3 on: September 24, 2008, 01:51:41 PM »

Hi quickzilverfox,

I need to ask you a few questions if I may:

On the Mini, what color, if any, is the slime?

How long have you been growing that seed kit?

Where do you get your water from?  (Tap, filtered, distilled, etc...)

Have you ever rinsed and refilled these gardens?

Is there a particular odor associated with the Mini that is not present in your other AeroGardens?  (OK, I'm reaching here, but I really don't know what's causing the slime.)

I'm hoping with these questions we can begin to narrow down the cause of the problem or at least some way of treating it.

Cliff
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Cliff Olson
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quickzilverfox
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« Reply #4 on: September 24, 2008, 03:27:05 PM »

On the Mini, what color, if any, is the slime?

How long have you been growing that seed kit?

Where do you get your water from?  (Tap, filtered, distilled, etc...)

Have you ever rinsed and refilled these gardens?

Is there a particular odor associated with the Mini that is not present in your other AeroGardens?  (OK, I'm reaching here, but I really don't know what's causing the slime.)

Slime is white and opaque.

Between 3 and 4 weeks.

Using 3-stage RO water.

Only topping up and adding nutes.  Same for the healthy Mini3 and 3 Pro 200's (all healthy).

Somewhat musky smell like old mushrooms...very faint.  Does not smell like water and nutes like the others.

Also, there is a small amount of black spore / mold at the top (near plate surface) of the weakest pod.  Everything is underneath in the bowl.  Some of the "slime" is free-floating and you can see globs of it inside the plastic cages of the pods.  It is heaviest on the healthiest of the three pods.

Hope that helps identify it and come up with a solution besides chucking the plants, sanitizing the Mini3 and starting over.  I also want to make sure my healthy systems don't get contaminated.
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« Reply #5 on: September 24, 2008, 03:31:32 PM »

What are you growing in that one Alex?
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« Reply #6 on: September 24, 2008, 03:36:55 PM »

Alex, is it possible to get the plant out, with it's pod, and wash the whole root system down under running tap water?

Sanitize the the rest of the AG bowl, pump etc before putting the plant back in. Fresh water and liquids of course.

Actually, hydrogen peroxide is used to kill slime on roots. Rather than go into this I will post this link: http://www.mjguide.com/tutorials/Hydroponics/752.htm. If the washing of your roots does not work, try this.

One other thing, this can be caused by oxygen depletion and light getting into the AG. Have a check on your AG3 aeration, are there plenty of bubbles?
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quickzilverfox
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« Reply #7 on: September 24, 2008, 04:52:27 PM »

English Garden Mini3 kit.

Plenty of air-bubbles and no sign of light getting in.  Does not really look like algae, more like slime mold or a bacterial slime.
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lorraine
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« Reply #8 on: September 25, 2008, 08:31:41 AM »

Hello Quicksilverfox,
I wonder if you might have gotten some version of pythium growing on your roots. Pythium is a normal soil microorganism that is usually kept in check in the soil by other organisms that eat it, but if it gets going in a soilless system it can take over. I found this excellent article about roots in general, and pythium specifically, that you might find helpful:

http://www.gchydro.com/information_roots.asp

Lorraine
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