Without having a clean tank it's not possible to raise happy fish!

With this in mind the best way to keep an aquarium clean is to not only have the proper equipment to clean it with, but also the knowledge of how to do it.

Using ordinary house hold cleaners is not recommended.

Keeping the filter for the water pump clean and in good condition is one key to having a clean aquarium. You also need to replace the filters according to the brand and quality.

Although some aquariums are quite large they still need to be kept clean.
The glass should be cleaned and the ornaments inside should be taken out of the tank and cleaned at least once a week. This way it doesn't allow algae build up.

On plastic aquariums the best way to maintain the cleanliness of them is to ensure they are cleaned every three to four days.

The air pump, if running properly, allows not only oxygen for the fish but also the flow of the water to not sit in one place. However, changing the water on a regular basis has proven to offer fish a longer life span and the aquarium to look much better.

Depending on the actual size, if it is at all possible, the rocks or beads at the bottom of the aquarium should be rinsed on occasion too. And yet, depending on the size as well as the type of fish this might not be an option.

In some situations, depending on the amount of fish in the tank and how easy it is to remove the fish, there are water purifiers available to purchase in addition to changing the water. When these treatments are added to the water, in most cases the water must sit for a few minutes to allow the treatment to be actually absorbed or combined into the water. If not, it could harm your fish. So it is a good idea to read and follow all of the instructions listed when ultimately doing this.