When installing a new aquarium in your home, there are certain things you should avoid doing to ensure the success of your aquarium. Firstly, do not place the aquarium near a heat or air conditioning vent, as this can cause temperature fluctuations in the water. Secondly, do not overcrowd the aquarium with too many fish or too much decor, as this can lead to poor water quality and stress on the fish. Thirdly, do not add fish to the aquarium too quickly, as this can cause a spike in ammonia levels and harm the fish. Lastly, do not neglect regular maintenance and water changes, as this is crucial for the health of the aquarium and its inhabitants. By avoiding these common mistakes, you can ensure a healthy and thriving aquarium in your home.