Define requirements and constraints
Record the baseline and check residual-current protection and sound outlets. Do not infer the aquarium's condition from a single sign. Measure the real space, identify connections and preserve clearance for cooling and service.
Then compare drip loops, dry hands and raised connections with livestock needs and recent changes. Compare useful capacity, energy and compatibility with the complete setup.
Install for future maintenance
Adjust one variable and assess separating water and electricity during maintenance before continuing. Keep a reference so the result can be compared. Test the assembly under controlled conditions and record settings that must be repeated.
Never use damaged cables, wet adapters or power strips on the floor.