Underwater Treasures Bubble Disk - 4.5" - Pack of 6 Rounded Beds Its ideal purpose is to

Its ideal purpose is to pull organic matter build up as well as oils found on the surface of the water to maintain a clean and healthy aquarium environment

semi-aquatic and terrestrial habitats

25% min Calcium 1

Features 4-Way Stretch Technology that moves better in every direction with a customized relaxed fit without the squeeze and won't bunch up

Underwater Treasures Bubble Disk - 4.5" - Pack of 6 Rounded Beds Its ideal purpose is toUnderwater Treasures Bubble Disks create life sustaining bubbles for active fish and a magnificent aquarium. They circulate water while generating much needed oxygen for your aquarium and all its inhabitants. The size and output of your air pump will establish how large a portion of the disk will discharge air bubbles. Rinse the Bubble Disk in clear water to remove any dust. 4. 5" diameter.