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INSTRUCTIONS:
1. Remove the lid, take the ceramic diffuser piece out and fill the diffuser with water; then put the ceramic diffuser piece and lid back to the diffuser.
2. Connect the CO2 diffuser with CO2 supply pipe; then place the air tube onto the fixer.
3. Fix the sucker onto the diffuser, and put the diffuser into the fish tank.
* It's a normal phenomena for the grains to be thicker at first use. In a few hours the grains will become thinner. After a long term usage, when the grains become thicker and fewer, please replace a new ceramic diffuser piece for better performance.
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