Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media Flowering and fruiting plants where

Flowering and fruiting plants where phosphorus matters—this guano base delivers

Particularly well suited to spaces where simplicity

UK manufactured to food-grade standards

packed with worm castings

but if pH is all you need

Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media Flowering and fruiting plants whereBluelab 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