Air stone discs are a great way to add necessary oxygen to your hydroponics garden or aquarium. We'sre rolling out a new product for you to do just that! The EcoPlus Air Stone Disc will help you aerate your hydroponics garden with ease. The micro-pore design of these air stones are great because it allows for the most aeration possible in reservoirs. This will energize your nutrients, which will lead to things like extended life, healthier roots, and increased growth rate. We have three different sizes of air stones, so no matter the size of your reservoir, you can get the one that'ss right for you!