Round Airstone 4"

·         Active aqua 4-inch air stone disc is a great way to add oxygen to your hydroponic growing system

·         The micro-pore design energizes your growing solution as it aerates and circulates your nutrients

·         It will extend the life of your nutrient solutions

·         Help keep your roots healthy and promote exceptional growth

·         Measures 6-4/5-inch length by 4-4/5-inch width by 1-inch height