Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
GroLine Monitor for Nutrients with InlineHydroponic ProbeThe GroLine Monitor for Hydroponic Nutrients HI981421 by HANNA Instruments provides around the clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. Quick to setup, simple to use, this monitor was designed with Hydroponics, Aquaponics, and Greenhouses in mind. Get 24 7 pH&EC measurements for consistent yields every time. Good Laboratory Practice (GLP) feature for professional accuracy. Calibrate
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 558 reviews
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Product Reviews
★★★★★ 5
My desk looks organized
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
Includes everything you need and a bonus to get the cord wrap
I bought this to route the cords up to the monitor on a height-adjustable desk. The top of the desk is an inch thick, and this was easy to drill through. To make sure I got a clean cut and did not damage the top, I put painters' tape on the area where I wanted to cut and drilled a small starter hole to get it exactly in the right spot. It cut a really clean hole from the top, and the plastic insert fit perfectly.
Once I got the hole cut and the wires run where I wanted them, I put the cord wrap on. The tool that comes with the cord wrap is really slick and super easy to use. I was able to bundle together three cords that hang off the side of the desk. Given that the desk is adjustable, it was a nice bonus to get the cord manager with the kit, as it keeps the cords from getting hung up in the desk when adjusting it.
I'm very happy with the purchase, great price.
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Reviewed in the United States on December 14, 2025
★★★★★ 4
Good product
The hole covers are great. As far as the hole cutting bit. Not so much. But still worth the price.
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Reviewed in the United States on October 26, 2025
★★★★★ 5
Good tool
Easy to use. Worked perfectly.
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Reviewed in the United States on October 4, 2025
★★★★★ 5
great product
love it great product
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Reviewed in the United States on April 12, 2026
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