Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean a water fountain [title] Turn off the fountain. [step] Before cleaning your fountain, it's best to turn it off and take the pump out to make cleaning easier. You can also remove any items in the fountain, such as large rocks.

Ending1: [substeps] Always check your manual before cleaning, as different fountains may require different cleaning methods. Before you take out the pump, you can connect a hose to it and use it to pump the water out of the fountain into a bucket or outside. Ending2: The pump should be attached to an outdoor stand to make cleaning easier. [title] Locate a water cooler or place on the back of the fountain. Ending3: [substeps] Some fountain owners prefer to carefully dispose of these materials to avoid damaging their water system in the future. [title] Opt for cleaning before adding water to the fountain. Ending4: [title] Pour some water in a bucket or bowl. [step] Fill the bucket or bowl with plain water for the best flow of clean water.

Answer format: ending1/ending2/ending3/ending4