When and how exactly is the water conditioner needed?
If you carry out your partial water change with a bucket, it is simple: always add the dose of water conditioner into the filled bucket (e.g. for the 10 l bucket content). However, if you are using a hose, add the dose of water conditioner to the aquarium BEFORE you add fresh water. This allows problem substances in the tap water, such as chlorine or lead, to be bound immediately, before they can do any harm. Please note that under certain circumstances this method could be fatal for shrimps and invertebrates, as they should NOT come into contact with any copper present in the tap water. If you have shrimps and invertebrates you should only follow the bucket method, in which the copper in the bucket is already bound by the water conditioner BEFORE it enters the aquarium.