Active Air COTEST CO2 Tester Kit Click Thumbnails to Enlarge

We recommend measuring CO periodically to ensure optimum levels for growth. The Active AirCO Tester Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper CO level, as well as eliminate waste and optimize growth. The kit is inexpensive and easy to use and includes instructions.

• An inexpensive alternative to costly electronic monitors
• Use the tester kit to gauge proper CO levels
• Ensures optimum levels for growth

Shipping

• International Orders: Please allow an additional 3-5 business days handling time.
• We ship via the quickest, most economical method - usually UPS, FedEx, or USPS.
• We ship from multiple warehouses and will always ship from the closest warehouse to your location.
• We cannot guarantee ground shipping times, however most orders arrive in 3 business days once shipped.

Payment

• Yozos gladly accepts PayPal, American Express, Discover, MasterCard, and Visa through \'s safe and secure checkout.
• We do not accepts checks, cash, or any payments outside of PayPal.

Returns

• Unused and uninstalled items may be returned within 30 days of purchase. Your return must be in new and unused condition.
• All returns must include original packaging, with all hardware and accessories.
• Orders returned outside of policy may be refused or subject to a 15% re-stock fee.
• Customers are responsible for return shipping costs.
• Damage claims must be made within 3 business days of delivery. After this time period, we cannot accept a damaged return.
• Damaged items will only be exchanged once we receive the damaged item back.
• For warranty questions please call 281-836-3229 or contact us through .

Contact Us

FAQs

HOW TO RETURN

• Contact us to obtain a Return Authorization number. Please include your return reason in detail.
• We will respond with a return authorization and return address, typically within 1 business day.

---