Is using expanded clay pebbles bad for my soil based medium? | Grasscity Forums - The #1 Marijuana Community Online
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Amazon.com : 10LBS Clay Pebbles Leca for Plants, Leca Balls Clay Balls Plant Garden Soil, Expanded Clay Pebbles for Hydroponic Aquaponics Growing, Orchid Potting Mix Soil : Patio, Lawn & Garden
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