I have been using myco but what is this? Mold?? Beneficial bacteria? Mycelium?
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It’s probably a mix of mineral salts and a fungus of some sort. A dilute peroxide mix will eliminate the fungus. How’s the airflow in your grow space? Good airflow can go a long way in preventing it.
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Airflow is great. Have around 4-5 fans.
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Are you letting the pots dry out between waterings?
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Of course, not for my coco Coir ones tho
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The fungus is really unusual given that RH, airflow, and watering is in check. You’ll want to keep the fungus off the pot as much as you can so that the bag can breath like it should. An occasional peroxide spray can keep it in check.
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Are the pots sitting directly in the tray and resulting runoff? Hard to tell but I do not see any racks or risers.
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The trays have risers indeed.
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I’ll give it a peroxide spray and probably just wipe it off today. What mixture should I do?
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I go 50/50 water/peroxide. Spray lightly. It doesn’t take much. Do it twice a day until what is there is gone (it will take a few days) and then every few days afterward to prevent future occurrence.
I ran into similar situation with my second grow here:
I’m assuming it’s due to it being a living soil. I haven’t noticed any mold or anything on the plant itself.