How to Move a Fish Tank or Aquarium

Preparation: Timing and Supplies You'll Need

Moving an aquarium is one of the most time-sensitive specialty moves. Fish can survive in bags for 24-48 hours maximum, and beneficial bacteria in your filter media begin dying after just 4-6 hours without flow. Plan your aquarium move as the last thing packed and the first thing set up at your new home. For a 75-gallon tank, budget 3-5 hours for teardown and 4-6 hours for reassembly.

Gather your supplies in advance: fish transport bags (double-bag for safety), rubber bands, a battery-operated air pump, 5-gallon buckets with lids (for transporting filter media and live rock in original tank water), styrofoam coolers for temperature control, and a dechlorinator. For saltwater tanks, you'll also need pre-mixed saltwater at the correct salinity for the new setup.

Stop feeding fish 24-48 hours before the move. This reduces waste production during transport and keeps bag water cleaner. Perform a 25% water change 3 days before the move to ensure optimal water quality.

Draining and Packing the Tank

Begin by saving 50-75% of your existing tank water in clean 5-gallon buckets. This water contains the established bacterial balance your fish need. Catch fish using a net (avoid chasing — stressed fish are more vulnerable during transport) and place 1-2 fish per bag with 1/3 water and 2/3 air. For large fish, use individual bags. Seal bags with rubber bands and place in an insulated cooler.

Remove all decorations, plants, and equipment. Live plants should be wrapped in damp newspaper inside sealed plastic bags. Filter media (sponges, bio-rings) go into a bucket of tank water — never let them dry out. Heaters, lights, and pumps are packed separately in bubble wrap.

For the tank itself: never move a glass aquarium with gravel or water inside. Even 1 inch of water in a 55-gallon tank adds 30 lbs of sloshing weight that can crack seams. Empty the tank completely, remove the gravel to a bucket, and transport the tank upright (never on its side) on a flat, padded surface. A 75-gallon glass tank weighs about 140 lbs empty and is extremely fragile at the seams.

Transporting Fish Safely in Montreal

Fish transport in Montreal's climate requires temperature management. In winter (November-March), keep fish bags in insulated coolers with chemical heat packs — water temperature dropping below 18°C can shock tropical fish. In summer, avoid leaving fish in a hot vehicle; park in shade and use battery-powered aerators for trips over 30 minutes.

For high-value fish (koi, discus, large cichlids, saltwater specimens), consider using a fish transport service. Some Montreal aquarium shops offer bag-and-hold services where they'll house your fish for 24-48 hours while you set up the new tank ($20-$50 depending on the number of fish). This is the safest option for moves across town.

Setting Up at the New Location

At your new home, set up the tank immediately. Position the stand on a level surface capable of supporting the full weight (a 75-gallon tank with water, gravel, and equipment weighs 850+ lbs). Fill with the saved tank water first, then top off with dechlorinated water. Reinstall the filter with the saved media, the heater, and run the system for 1-2 hours before adding fish.

Float the fish bags in the tank for 15-20 minutes to equalize temperature, then slowly add tank water to the bags over 30 minutes before releasing. Monitor fish closely for the first 48 hours — signs of stress include rapid breathing, color fading, hiding, and refusal to eat. Avoid turning on bright lights for the first day. Test water parameters daily for the first week and be prepared with water conditioner and beneficial bacteria supplements.