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Trusted
The newer systems come with larger diameter tubing (9mm?) which is supposed to allow for the usage of organic nutrients that would otherwise block the tubes. Plus they're supposed to be flushed after a certain duration to clear any buildup.
My kit came supplied with clay beads/pebbles and Coco coir
Google images:
I understand that the coco absorbs calcium so that must be considered with the type of nutrient.
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