Chlorine remover, or dechlorinator, is important for aquariums because chlorine is toxic to fish and can kill them:
•Removes chlorine and chloramine
•Chlorine and chloramine are added to city water to make it safe for humans, but they can harm or kill fish. Chlorine removers can neutralize these chemicals and make tap water safe for aquatic life.
•Detoxifies heavy metals
•Some chlorine removers can also bind and neutralize heavy metals that can be toxic to fish and plants.
•Maintains stable water conditions
•Some chlorine removers can help maintain stable water conditions and don't interfere with beneficial bacteria in the system.
Here are some chlorine removers you can use for aquariums:
•Tetra AquaSafe Plus Water Conditioner: This product removes chlorine and chloramine from tap water and helps maintain stable water conditions.
•Sunken Garden Anti Chlorine: This product neutralizes chlorine and chloramine and detoxifies heavy metals.
•Ocean Free Anti Chlorine Special Aquarium Water Conditioner: This product neutralizes fresh tap water and removes heavy metals.
You can also use vitamin C to dechlorinate tap water for fish. Sodium ascorbate is a good choice because it's neutral and shouldn't affect the pH. Ascorbic acid can lower pH, so you should be careful not to add too much.