Read the specification in context
Record the baseline and check stated 76–190 and 152–265 L ranges. Do not infer the aquarium's condition from a single sign. Identify the variant, market, document date and which claims come from the manufacturer.
Then compare basket, flow and hanging-weight differences with livestock needs and recent changes. Translate nominal figures into space, flow, access, energy and maintenance requirements.
Check fit and limitations
Adjust one variable and assess water level, current and rear clearance before continuing. Keep a reference so the result can be compared. Confirm availability, spares and exact package contents before using the profile to buy.
Measure the rim and assess noise and restart; do not decide from commercial litres alone.