Review on 🐠 Pawfly 6 PCS Ball Shape 1.2 Inch Air Stone ASR030: The Ultimate Mineral Bubble Diffuser for Aquariums, Fish Tanks, and Pumps by Heather Brown

These are fantastic little bubble stones when you want to add a small amount of bubbles to different areas of your aquarium or nutrient reservoir. They are compact but distribute the air evenly over the stone surface. Pay attention to their size. It's small! I grew my plants in small individual cups so I didn't have much room to air and they were perfect for me. You might want to look for something with more surface area depending on what you need.