An important step in the process of cleaning aquariums is siphoning debris from the gravel on the bottom. Doing this can be messy, but is not difficult if you have an aquarium gravel vacuum.
Gravel vacuums typically have a rigid plastic tube that is about 2 inches in diameter attached to a smaller flexible tube that is around ½ inch in diameter. The larger tube should be a bit shorter than the height of your tank, and the smaller tube should be 4 to 6 feet long so that it can easily reach a bucket on the floor.
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