Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to keep aquarium water clear [title] Leave the cloudy water. [step] Many times cloudy water will disappear on its own while the water environment adjusts. Often, cloudy water is a result of mixture of microscopic organisms, such as bacteria, protozoa, and micrometazoa.

Ending1: Disrupt this routine with chemical baths and cleanings as appropriate to ensure your fish do not become sick from bacteria, viruses, or parasites in a bright morning. [substeps] Always wash your tank before you use it. Ending2: These types of creatures often feed on bacteria. Introduce different filtering techniques to filter the water water properly, and try placing the aquarium back-to-front. Ending3: Fish can drown if they stay in a cloudy, still water. [substeps] The tank water is unpurified and made of nitrates, which is not harmful to the environment. Ending4: These organisms come from your fish, the food, and waste. Usually, the tank will balanced out and clear up within around a week.

Answer format: ending1/ending2/ending3/ending4