Marina Air Check Valve, 1/4" nutrients-and-supplements - CO2 controller with display

- CO2 controller with display and day/night detection

Synthetic chelates can raise the salt-index in a biochemical system and raise the potential for salt build-up and toxicity

Ergonomically designed handle

Humboldt Nutrients Grow Natural is an ultra-concentrated natural grow formula designed to give your plants the nutrient-rich foundations needed during the vegetation and flowering period

Ease of Installation

Marina Air Check Valve, 1/4" nutrients-and-supplements - CO2 controller with displayThe 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.