HydroLogic Pre-Evolution High Capacity Pre-Filter BioWorks This advanced formula features a

This advanced formula features a blend of carefully selected biological stimulants

Versatile Use: Suitable for a wide range of plant growth media such as hydroponics

0 pH - 250 ml and BlueLab Calibration Solution - 7

keeping your pH levels in the ideal range

5% and citric acid at 0

HydroLogic Pre-Evolution High Capacity Pre-Filter BioWorks This advanced formula features aEnsures your Evolution RO1000 runs more efficiently. Less filter changes and maintenance every 7,500 gallons of purified water. Cleanable sediment filter is re usable. Combination of KDF85 and KDF55 with earth friendly catalytic carbon filter reduces chlorine, chloramines, iron, sulfur and heavy metals great for city or well water. Highly recommended when using more than 150 gallons of purified water per week average.