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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
The Alfred Heat Mat 20" x 20
The Alfred DWC 2-Plant System is a complete
The stainless steel components and powder coated frame clean-up easily and quickly
Add CANNA Coco B separately and mix again
Ideal for storage after use and monthly hydration maintenance
Hanna Instruments HI73311 Spare EC/TDS Electrode (for HI98311 & HI98312) Plant Supplements The Alfred Heat Mat 20"Hanna Instruments HI73311 Spare EC TDS Electrode (for HI98311 & HI98312) Replacement Conductivity Sensor Amperometric Graphite Fast Swap for Accurate EC TDS Readings The Hanna Instruments HI73311 is the official replacement conductivity (EC) and TDS electrode for the HI98311 and HI98312 testers. If your EC TDS readings have become unstable, slow to respond, or hard to calibrate, replacing the sensor is a simple way to restore reliable
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