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Remove the filter housing from the liner and check the black membrane inside.
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Please make sure the new filter is clean and dry before you install it. Remove the filter cartridge from the filter housing and check it is clean. If you are unsure how to remove them, please refer to the assembly section within the Lay-Z-Spa owners manual. Remove the black stopper caps from the inside of the liner before heating, filtering or running the bubbles on the spa. The stopper caps are still inside the spa.
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