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Pure Zym also increases the ability to absorb oxygen
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from beginner to master grower
Designed for excellent performance and easy maintenance
Monitor EC regularly and adjust accordingly based on crop and growth stage
Hydro-Logic PreEvolution High Capacity Pre-Filter Age Old Pure Zym also increases theHydro Logic Chlorashield membranes remove 100% of chloramine and are great for city water. Rated at 1 GPM down to 1 micron. They are made in the USA and have a low pressure drop combined with exceptionally high dirt holding capacity. HGC728772 is for Evolution RO systems (20 in x 2. 5 in) and should be replaced after 2,500 gallons. HGC741668 is for TallBoy systems (20 in x 2. 75 in) and should be replaced after 6,000 gallons. HGC741640 is for
