Handy items that make life easy when used in and around an aquarium.
Consider for example a leakage sensor, small scale for weighing your additives, tubes for use with a dosing pump to get the last bit out of the dosing bottle. Handy plastic pliers for picking up items on the bottom, without having to go to the aquarium with your arms.
Fish fall to ‘easily’ remove fish from the aquarium, eg in case of illness or sale