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TEKCOPLUS Digital pH Meter Monitor Sensor Tester Pen Waterproof 0~14 Temperature Measurement High Accuracy Tests Water Aquarium Swimming Pool Hydroponics Plants?
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1 review of this product found across Reddit:
1 point
·
24th Dec 2020
https://www.amazon.com/gp/product/B01KHR1XPQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Is a waterproof Ph pen that has been good for me and you don't have to worry about damaging the $20 ones if you just spend $7 more
I really suggest a quantum board over the blurple led
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