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| Once the trough was finished I placed a 45mil liner in it. | ||||||||||||
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| I then measured out the size that I wanted each filter chamber to be. The sections that divide each chamber, had to be made out of a material that would allow the water to pass through. After many years of building aquarium filters, I decided that the plastic lighting covers were the best to use. You can see one below | ||||||||||||
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| I cut them to fit and sandwiched them between styrofoam to protect the liner. | ||||||||||||
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