Ownocns 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; Please soak the air stone in water for about 30 minutes before usage. After a long-term usage, clean your stone regularly so that it will be most effective. Net Weight: approx. 7.5 ounce (213g). Package Included: 1pc Air Stone, 3pcs Suction Cup.
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