Collection: Air Stones & Diffusers

Shop aquarium air stones and diffusers for creating streams of bubbles from a compatible air pump. Available designs can include compact stones, discs and other diffuser shapes for different tank layouts and aeration setups.

Check the airline connection size and recommended airflow before ordering. Air stones can gradually become blocked by mineral deposits and debris, so inspect and clean or replace them when bubble output becomes uneven or noticeably reduced. Aeration requirements vary between aquariums and should be considered alongside filtration, stocking and water movement.

Browse compatible Air Pumps and Bubble Bars & Air Curtains, or explore all Aquarium Filtration, Pumps & Aeration.