1-1/2" Round Air stone / Air Diffuser
These Aluminum Oxide air stones / air diffusers are extremely durable, long lasting and can be repeatedly cleaned as necessary. Also great for hydroponics as they produce fine bubbles which increases the surface area and circulation through the water column
Features:
Barley Straw Pellets naturally reduce algae growth in your pond. The products released from the barley as it breaks down inhibit algae growth without the need for harsh chemicals.