What to Check Before Cleaning an Aquarium

Record the tank, filter, heater, lighting and water-treatment equipment models and locate their current manuals. Note the species housed and any maintenance instructions supplied by the aquarium maker or aquatic-care professional. Do not unplug, dismantle or alter equipment contrary to the manual.

Do not use household detergents, fragrance, disinfectants, solvents or pesticides on tank surfaces or near aquarium water unless the exact aquarium manufacturer and product instructions expressly permit that use. No generic cleaning chemical or residue-removal method is recommended here.

Water chemistry, filtration and animal care depend on the species and actual system. Follow a qualified aquatic veterinarian or experienced aquarium professional for species-specific instructions. This article gives no water testing target, dose, replacement volume, timing or diagnosis.

For nearby cabinets, floors or exterior glass, identify the material and use only a compatible labelled product. Prevent cleaning liquid from entering the tank and coordinate access with the aquarium’s owner. A home cleaner does not service aquarium equipment or provide fish care.

If a pump, heater or electrical component faults, follow its manual and contact the manufacturer or qualified technician. Ask an aquatic veterinarian about illness or behaviour changes; do not interpret them through a cleaning article.