Growers Choice ROI-E420 LED chillers-heaters-and-purification or they can be used

or they can be used for flowering by stacking the 4x4x3 on top of this 6x6x4

Unique 3-Layer charcoal fiber technology

Place the Drip Shield on top of a 6" rockwool cube and enjoy countless combinations as you mix and match any of the following products utilizing the Drip Shield's two inserts: Short Plunge Drippers

99 THD: <10% Crest Factor: <1

Output Voltage:                        24V

Growers Choice ROI-E420 LED chillers-heaters-and-purification or they can be usedThe ROI E420 series Horticulture LED System. An inspired collaboration between two of the most respected lighting companies in horticulture industry. TSL Horti Tech and Growers Choice have joined forces with their years of innovative experience to create this high performance and cost effective lighting solution for commercial horticulture."