Pay in 4 interest-free payments of $3.62 Learn more
Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
or 12 or 24 VAC up to 4
It provides boosted micronutrient levels
• Toughened spear tip for direct root-zone measurements
High in soluble potassium
Hydrofarm CO2 Tester Kit (CLEARANCE 40% OFF) POWERSI or 12 or 24 VACFINAL SALE! We recommend measuring CO2 periodically to ensure optimum levels for growth! The Active Air CO2 Tester Kit is an inexpensive alternative to costly electronic monitors! Why Active Air CO2 Tester Kits (Hydrofarm)? An inexpensive alternative to costly electronic monitors! Ensures optimum levels for growth! Use the tester kit to gauge proper CO2 level, as well as eliminate waste and optimize growth. The kit is inexpensive and easy to use and
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