Hanna Instruments GroLine Storage Solution (20 mL Sachet) HI70300G sponge Clay pebbles can also be

Clay pebbles can also be mixed with other hydroponic growing media like Coco or Soil to give better aeration

Unique sensor allows measurement of viscous liquids

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one-button operation• Displays light intensity levels every 4 seconds for 24 hours• An affordable

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Hanna Instruments GroLine Storage Solution (20 mL Sachet) HI70300G sponge Clay pebbles can also beHI70300G is a high quality storage solution designed with hydroponics, aquaponics, and greenhouses in mind. Single use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on the go testing, fitting easily into your pocket or carrying case. Specially formulated for storing GroLine electrodes. Single use sachets for convenience. Perfect for use with GroLine testers and portable meters!