Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to clean a spa filter [title] Locate your filter cartridge. [step] Oftentimes, you can partially see the filter from the inside of the spa system. It is most often located inside of a canister, cradle, or lid.

Ending1: Modern filters have small holes at the top to allow water to flow through. [substeps] Remember to unscrew and remove these with a screwdriver. Ending2: If you do not see such a compartment, check your owner's manual to locate the filter. [title] Turn your spa system off before you remove the filter. Ending3: If this is the case, look for the cartridge (near the upper portion of the probe portion) which has a tiny " six-hole " slot in it. [substeps] You may have to begin turning your device in one direction several times to find it. Ending4: [substeps] Pay attention to the lining of the cartridge as well. If it has one side only, it's going to be covered in cleaner, which may stain your filter.

Answer format: ending1/ending2/ending3/ending4