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PH and TDS Meter Combo, Digital Water Tester 0.05ph High Accuracy Pen Type pH Meter ± 3-in-1 TDS EC Temperature & Conductivity Meter PPM Meter for Home Drinking Water Hydroponics Aquarium and More?
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2 reviews of this product found across Reddit:
1 point
·
6th May 2021
I suggest you order these for your next grow and begin keeping track of your PPMs each feeding. You will see a visible difference. The link I shared is a combo with a PH tester as well 😊
1 point
·
14th Dec 2020
Where did you purchase your light mix? Couldn’t find it on amazon and the nearest store is a few hours away.
Is this the only tool I really need?
GroTheory PH Meter and TDS Meter Combo, PH Tester Digital, PPM Digital Water Tester, 0.05ph High Accuracy Pen Type pH Meter, Readout Accuracy 3-in-1 TDS EC Temperature Meter https://www.amazon.com/dp/B086JG935T/ref=cm_sw_r_cp_api_glc_i_eC51FbM5H344W?_encoding=UTF8&psc=1
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