Marina Air Check Valve, 1/4" reflective-and-greenhouse-films The simplicity of this thermostat

The simplicity of this thermostat and its small design make it a useful addition to any grow room

and herbs will receive adequate nutrition during the vegetative and flowering stages

This floating

In this tray sits a stand covered by a sheet of absorbent cloth that draws water up and into the bottoms of the planted seed trays by capillary action

• Premium German aluminum hammertone interior: 99

Marina Air Check Valve, 1/4" reflective-and-greenhouse-films The simplicity of this thermostatThe Marina Check Valve prevents water from siphoning through the air hose and into the air pump in the event of a power failure or when removing filters and other air driven accessories.