Aqua One PVC-Encased Air Disk, Small (7.5 cm)

A flat disk diffuser in a PVC housing. Disks sit low on the substrate and produce a wide, flat column of bubbles rather than a point source, which moves more water for the same pump output.

Key features

• Provides oxygen and water movement, and assists in releasing carbon dioxide build-up.
• Releases a constant stream of fine bubbles that will not disturb your aquatic inhabitants.
• Encourages healthy bacteria growth and adds an attractive element to the display.
• Intended to be used with an air pump, check valve and airline tubing.
• Suitable for coldwater and tropical aquariums.
• Flat profile sits low and tucks behind hardscape easily.
• Aqua One item 14043 — Airstone PVC Encased Air Disk Small. Supplier lists the disk at 7.5 cm.

Air stones are a consumable — mineral scale and biofilm slowly close off the pores, output drops and the pump works harder, so plan on replacing them periodically. Aqua One intend these to be run with an air pump, check valve and airline tubing; if the pump sits below the water line, fit the check valve so water cannot siphon back into it. More diffusers, tubing and pumps are in Aeration, and staff at the Lethbridge store can help you match one to your pump.