How long can a fish tank go without a water change?
Ideally, once you have performed those water changes, a 25% water change every 2-4 weeks will maintain good water quality in your aquarium.
How often should you clean fish tank?
Depending on how many fish you have, and how messy they are, most tanks require cleaning about once every two weeks. Cleaning should involve: ✔ Siphoning the gravel to remove any debris and uneaten food, and changing about 10-15% of the water.
How do I know when my fish tank needs cleaning?
There is no need to clean your fish tank every day, unless you see the fish behaving strangely (gasping for air or acting sluggish). If you see your fish not acting right, consider doing a partial water change.