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Mildew (WPM) possibly on coco top layer?

Ezzjaybruhstarted grow question 5y ago

I know the pics suck and no one can say confidently- but any indicators that mildew is growing on coco rather than just salts/nutes dried up? How common is it on coco compared to other substrates ? It’s not anywhere on leaves FYI Thanks!

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Organomananswered grow question 5y ago

It can be common on substrates that don't get the chance to dry out and are kept continually wet. Just break it up and let the top dry out a bit before watering again and it should go away. It is just a bit of bio degrading going on and nothing to be too concerned over. Try only watering when the top 1-2 inches are dried out and this should stop the mildew from growing in future. Hope this helps,... Organoman.

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