Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media Each fan features two selectable

Each fan features two selectable speed settings

A light sensor is also included with this model

including humic and fulvic acids

whether you're using run to waste systems

Total Blackout - Thick and Lightproof Sheeting

Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media Each fan features two selectableBluelab Guardian Monitor (Conductivity Temperature pH) When growing hydroponically, it's essential to carefully monitor reservoirs to ensure that nutrients of the right strength, temperature and pH are delivered to your plants. The Bluelab Guardian is an all in one solution to monitoring every essential parameter. Should levels ever drop below, or rise above, pre determined values, then the easily programmed visual alarm system kicks into action to