Aquarium without filter #aquarium #fish #fishtank #aquascape #cute #lowtech

An aquarium can function without a filter, but it depends on several factors. A filter works to maintain water quality by removing debris and harmful chemicals through biological, mechanical, and chemical processes. Without a filter, water quality can deteriorate quickly, which can be harmful to the fish and other organisms inside.

However, if your aquarium doesn't use a filter, you'll need to maintain water quality in other ways, such as:

1. Regular water changes – Change a portion of the water regularly to prevent the buildup of ammonia, nitrate, and nitrite.

2. Using plants – Aquatic plants can help absorb harmful chemicals and improve water quality.

3. Choosing suitable fish – Fish that are more tolerant of slightly poorer water conditions can be easier to manage in a filterless aquarium.

4. Manual cleaning – Keep the aquarium clean manually by removing debris from the bottom and decorations.

Overall, while it can run without a filter, an aquarium without a filter requires more attention and regular maintenance.