Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to control an algae bloom [title] Perform a partial water change in your tank. [step] Partial water changes are one of the most efficient ways of combating algal blooms in your tank. By removing a portion of the water and replacing it with algae-free water, you'll essentially dilute the algae content of the water.

Ending1: [substeps] To do this, measure out 0.0275 lb. ( 64 kg) water from the affected tank's compost or waste container to 2 ft (0.9 m) away from the source and add water in this manner until you've started the water change. Ending2: You should generally do a partial water change every two weeks to protect the water quality in your tank. [substeps] Drain or siphon off about 25% of the water in your tank. Ending3: This will work best if it's cool or very cold. However, if you live in a relatively wet climate, it may not be necessary to water-change any part of your tank. Ending4: [substeps] Partial water change should only be performed under an appropriate current. Algae plants thrive on better water, and often partial water changes alone won't make matters any difference.

Answer format: ending1/ending2/ending3/ending4