Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media packed with worm castings

packed with worm castings

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

and built to last longer than cheaper single-layer alternatives

This isn't slow-acting

Bluelab Guardian Monitor (Conductivity / Temperature / pH) Media packed with worm castingsBluelab 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