I’ve used 7 gallon fabric pots for a while now but never really worried about this before. I’ve always had this white growth around the pot where it gets wet, then dries but is this really ok?
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It is salt buildup from your nutes. Mine get like that also. I dont worry about it.
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Salt build-up as @GreggT mentioned I wash mine in washing machine on quick cycle they will look like new again. Usually after about two grows.
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I wash mine after every grow.
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im lazy and trash mine and get new ones, not rich, just a PITA for me lol
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