Aqua One Airstone Pvc Air Disk Encased 10 x 10cm Medium

Airstones circulate water, generating oxygen whilst providing environmental enrichment.

Aqua One Airstones are long lasting and provide excellent aeration in cold water, tropical or marine set ups.

You can position them anywhere in your aquarium and even bury them in the substrate or under an ornament.

A stream of fresh, silvery bubbles enhances any set up.

Try keep the Air stone level. This will ensure bubbles along the entire length pf the stone. 

If the air stone stops working correctly remove it from the tank and clean in warm water, or replace it. Check the operation of your air pump.