Can you put a fish tank in a apartment?
Some apartments allow tanks up to 25 gallons while others limit it to 2 gallons. In humid areas, aquariums can cause mold as well. This problem can occur even if the aquarium never leaks because aquariums increase the humidity level in a room. For this reason, some apartments may not allow even small aquariums.
Where should I put my fish tank in my apartment?
To sum up everything above, a quiet place away from direct sunlight and traffic, where your fish tank can easily be reached for maintenance and care, is the ideal placement in a house for an aquarium.
Can you have a fish tank on the second floor apartment?
You will be fine. I am a framer for a living and your home will have no problem holding the weight. The best location for a tank would be perpendicular to your floor joists and placed on an exterior wall. All that weight goes right to the foundation.