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Amazon.com: Customer reviews: Exhale Homegrown CO2 365 - Self-Activated Bag with Hanger & Twin Canaries Chart for Grow Rooms & Tents - Great for Indoor Grow Rooms - CO2 for Grow Tents - 4lbs
Provision Hydroponics & Garden Supplies - The Original ExHale CO2 Bag produces CO2 24 hours a day with no need to refill bottles or use expensive CO2 production units. The power of
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