For cleaning or selecting fish, a net is a must-have for every aquarium.
Things to Consider:
Various sizes -- Nets are available in various sizes. Select one that is easy enough for you to maneuver yet can do the job.
Cleaning -- After cleaning your tank, be sure to clean your nets to prevent further contamination. A variety of net cleaners are available.
Tongs -- For moving and setting tank decorations without getting wet, a set of tongs for your aquarium is a great addition.