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Intro
Why I think the box filter is the best all-around filter ever made
Final thoughts
Different types of filtration
What can you put in a box filter?
Can you use a sponge filter in an aquarium?
Benefits of a box filter for beginners
Maintenance on a box filter
What media I use in my box filter
Lee's triple flow box filter
What You'll Learn
Why the non-return valve may need cleaning
How to remove the lower basket
How often to clean the filter system
How to remove and check the non-return valve
How to check the non-return valve
How to check the drain pump is not blocked
How to reinsert the non-return valve
How to clean the triple filter
Conclusion