HydroRocks are used to create drainage layers. They allow excess water to drain through the substrate, which prevents substrate getting water logged and plant roots rotting.
They can also absorb water and release it back into the substrate, which helps to maintain humidity.
Great for use in Tropical or Arid setups.
Supplied in approximately 9 litre bags
Not sure how much you need? Contact us with your enclosure size and we can help you work it out.