Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to dechlorinate pool water [title] Stop adding chlorine to your pool. [step] Simply stop adding the chlorine tablets that you regularly put in your outdoor swimming pool. Exposure to sunlight will gradually dechlorinate the water.

Ending1: You'll need to leave the pool uncovered for two weeks. [title] Use a bucket to dechlorinate a small amount of water. Ending2: This is because chlorine acts by converting water into ammonia. However, ammonia can do damage to the biological processes that preserve the ammonia molecules, which will affect evaporation rates and/or cause pool water to stink up. Ending3: [title] Fill a large bucket with the water. [step] Fill a large bucket with 1/2 a liter (0.8 us gal) of chlorinated water. Ending4: [substeps] Move a 5-gallon bucket around the area. Easily scrub away any algae that is dry around the edges of the bucket.

Answer format: ending1/ending2/ending3/ending4