It is never wise to drain a pool completely . If the liner is over 2 years old there is a chance that the liner would shrink and refilling would be difficult.
You can use a pool cleaner hose to drain the water via the pool pump if you can keep a good seal at the skimmer. Otherwise drain it to the skimmer then use a pump. For an above ground you can also disconnect your return line if it can be and let it drain out
Which type?
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