Step-by-step response
Stop water sourceDrain tank below leak OR isolate flooded room.
Extract waterWet/dry shop vac extracts 5-15 gallons quickly. For larger floods: rent a water extraction unit ($30/day at home stores).
Lift wet itemsFurniture, rugs, electronics - get OFF wet floor. Saltwater destroys electronics in hours; freshwater takes days.
Run fans + dehumidifierIndustrial fans for 5-7 days. Dehumidifier maintaining 40-50% room humidity. Wood subfloors take 7-14 days to fully dry.
Inspect for moldDay 5-7: check baseboards, drywall edges, behind furniture. Visible mold = professional remediation.
Document for insurancePhotos of damage + the failed equipment. Most homeowner/renter policies cover sudden aquarium failures (but NOT slow leaks). File claim within 30 days.