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How is (Light Expanded Clay Aggregate) or ECA® sterilized before use in hydroponics?

How is (Light Expanded Clay Aggregate) or ECA® sterilized before use in hydroponics?

Before using in hydroponics, it's crucial to sterilize it to remove any potential pathogens or impurities. This can be done by soaking it in a 10% bleach solution for about 15 minutes, then rinsing thoroughly until all bleach residue is gone. It's then left to dry before use.