Designed to work with an air pump to keep oxygen flowing gradually, with no noise or large bubbles, just a soothing column of fizzy goodness. Perfect for oxygenating hydroponics: natural pores let airflow through to diffuse oxygen into the water and keep your plant roots breathing easy.Pro-tip:
Grab a Dura Pump Air 2
to drive your stone and get your fizz on.
Large round airstone