Passive Unit Kit 450 g Mark I HPS/MH Lights They are an attractive proposition

They are an attractive proposition for many plant enthusiasts in that they only require application anywhere from 2 to 6 months per year

we took the DBT Model 4 and doubled it

Flush monthly with plain water to remove traces of mineral salts build up

Its greatest features are:

Supplemental Grow Lighting – Position lights vertically between plants to boost lower canopy growth

Passive Unit Kit 450 g Mark I HPS/MH Lights They are an attractive propositionAll MK I & MK II Passive Unit Kits consist of 304 and 316 Stainless Steel Columns and Fitok Fittings. Stainless Steel Braided PTFE Lined Hose and PTFE Gaskets with 150 micron Mesh Gasket and 1. 5 Borosilicate Sight Ports. Safety features including 150 psi Conrader Brass Pressure Relief Valves, 150 psi Stainless Steel Pressure Gauge and Nai Lok Ball Valves. Passive Unit Kits allow you to turn your already existing Closed Column Unit into a Full Reclaim