Bubble stone is suitable for various kinds of aquarium, aquarium, living fresh oxygen, oxygen cylinder burst open,Scenic beauty Through high temperature sintering, strong and durable, good gas permeability, good filtering To be an important favor to successfully keep aquatic fish in good health by promoting respiration process Increase the oxygen of your fish tank,Easy to wash,durable and reusable DIRECTIONS FOR USE: 1 Connect air stone with air tube（air tube is not included 2 Soak in the water for 15 minutes before use 3 It's durable and be used for a long time .When it is clogged with dirt or producing bubbles with low quantity,please wash it for re-used Specification: Material:silicon carbide and plastic Function: increasing oxygen Product type: gaseous disk Diameter: 10cm
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