NU Aqua 4.5" x 20" Whole House Granular Activated Carbon Filter - 5 Micron GAC Replacement EC calibration solution 1413 Hydroponics: Optimize nutrient solution chemistry

Hydroponics: Optimize nutrient solution chemistry for maximum plant growth and health in hydroponic and aquaponic systems

Easy maintenance – simple cleaning and storage procedures for long electrode life

Hanna's Clogging Prevention System (CPS™) technology and spherical glass sensing bulb made with general purpose glass

healthier shower water with convenient replacement filters included

Prevents & Removes Hard Water Scale

NU Aqua 4.5" x 20" Whole House Granular Activated Carbon Filter - 5 Micron GAC Replacement EC calibration solution 1413 Hydroponics: Optimize nutrient solution chemistryDeliver clean, chlorine free water throughout your entire home with the NU Aqua 4. 5" x 20" Whole House Granular Activated Carbon (GAC) Filter. Engineered with advanced HydraCoil technology, this premium 5 micron replacement filter provides superior chlorine removal and contaminant reduction for whole home water filtration systems. Advanced HydraCoil Technology Unlike standard carbon filters, this NU Aqua GAC filter is manufactured using proprietary