4 Corners Organics Pumice - Medium (1/4" - 3/8") Size:1 Cubic Foot If the float valve stops

If the float valve stops operating

• Works on contact and is also absorbed into the plant

Anticorrosive and rustproof materials

Dual Fuel gives you the ability to fine-tune your garden to ensure you get bigger and better yields

The highly-efficient S4 full spectrum provides more red

4 Corners Organics Pumice - Medium (1/4" - 3/8") Size:1 Cubic Foot If the float valve stopsPumice is formed from volcanic activity and owes it's unique porous structure to the rapid temperature and pressure changes that occur during a volcanic eruption. An excellent soil additive for increasing drainage and aeration, pumice also has a mineral content that is beneficial to plants. Pumice also assists in promoting microbial establishment and growth due to its porous nature. All of the surface area provides living environments for root zone