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Aquarium filters are expensive, especially the replacement filters. Using things I had laying around the house, I made some of my own for under $.25.
Commercial filters are expensive (unless they came with your tank at a garage sale, like mine).
I realized how simplistic those commercial replacement filters are, and found a substitute: air filters. Now, these commercial filters come with carbon or other media as a chemical ...
Create a pocket for the chemical media. I simply hot-glued the edges. Be sure to squish the glue between the filter parts.
Now, prior to just making my own filters, I did use commercial filter replacements without the plastic frame that comes molded to them (I don't know why there ...
Insert filter. This has been my first instructable. Give me criticism. thanks.
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