Active Aqua-Carbon Block Filter Options:Active Aqua 10" Carbon Block Filter Package Contents (Original):

Package Contents (Original):

This ancient source of plant food has proven itself over the ages to be an effective way to achieve a successful harvest

• Unique star-shaped hole accommodates most stem sizes for cloning

this device is smart

Active Aqua-Carbon Block Filter Options:Active Aqua 10" Carbon Block Filter Package Contents (Original):Even a small amount of chlorine can destroy your RO membrane. This carbon block filter removes chlorine before it can do any damage. Rated for approximately 3,750 gallons of water at 2 ppm chlorine. Great for removal of VOCs (volatile organic compounds), herbicides, pesticides, and other contaminants. Works with residential and commercial water purification systems, both for tanks and other applications.