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been
Why should you have to wash hydroton after every crop if you don't have to wash the coco after every crop? Unless you had some kind of pathogen attack the plants from the previous cycle, seems like the inert medium would be an ideal candidate for immediate reuse.
What are you going to do with all that hydroton after you've bought up so much coco?
What are you going to do with all that hydroton after you've bought up so much coco?