Active Aqua Chiller with Power Boost, 1/2 HP Hydrofarm Supplementing calcium and magnesium is

Supplementing calcium and magnesium is one of the secrets of expert growers and results in more vigorous plants and larger yields

These filters are light weight and incredibly effective at removing the most potent and dankest odors

do double duty: They retain water

Water each plant with 1/2 L (1/2 qt) of the mixture when you see new growth starting

Active Aqua Chiller with Power Boost, 1/2 HP Hydrofarm Supplementing calcium and magnesium isProduct Details Active Aquas chillers are environmentally friendly (they use R134a refrigerant) and are ideal for keeping the nutrient solution in your reservoir at the perfect temperature. Each unit has a user friendly temperature system that allows you to control your desired temperature range as needed, and all models now have a boost function that accelerates the chilling process for quicker establishment of initial nutrient solution temperature.