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This is a question for a friend of mine that lives up in the mountains. There is no hydro shops around & he's too paranoid to order online he found coco coir bricks at a petco.
http://www.petco.com/product/10813/...essed-Coconut-Fiber-Expandable-Substrate.aspx
Would these be ok to use or do you think that they can contain something that would harm his plants?
http://www.petco.com/product/10813/...essed-Coconut-Fiber-Expandable-Substrate.aspx
Would these be ok to use or do you think that they can contain something that would harm his plants?