Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media no guessing what works with

no guessing what works with what

and built to last longer than cheaper single-layer alternatives

Anyone growing in heat-constrained spaces where HPS output creates cooling headaches

UK manufactured to food-grade standards

so if the worst happens

Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media no guessing what works withBluelab Guardian Monitor (Conductivity Temperature pH) Complete Feeding, No Guesswork 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