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It is designed to increase response time and maximize the life of Bluelab pH pens and pH probes
Come in packs labeled with instructions
hydrate and calibrate pH probes as well as clean and test conductivity (ppm/EC) probes
Simple and easy-to-use
Excellent for use around HPS and MH lights in grow rooms
Hydro-Logic® PreEvolution Chlorashield Size:Hydro-Logic PreEvolution Chlorashield It is designed to increaseHydro Logic PreEvolution Chlorashield reduces iron, sulfur, chlorine, chloramines and heavy metals. The pre filters double the filter life. Great for city or well water! Bacteriostatic qualities do not allow microbes to breed in filter. #728772 is 20 in x 2. 5 in. #741630 is 12 in x 2 in. #741640 is 10 in x 4. 5 in.
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