Air Stone Round 4" Garden Accessories safe to apply on food

safe to apply on food crops up to one day before harvest

Emerald Goddess contributes additional macronutrients

the North American convention of using Mass/mass (milligrams/ kilograms) is the standard and mandatory way to state the NPK ratio's

They turn dead roots into minerals and sugars

Air Stone Round 4" Garden Accessories safe to apply on foodActive Aqua air stones are an ideal way to add oxygen to your hydroponic growing system. The micropore design energizes the growing solution as it aerates and circulates nutrients. Air stones will extend the life of your nutrient solution, help keep roots healthy, and promote exceptional growth. Choose from two versatile, round air stone disc sizes. This one is 4" inches.