The water level will drop between 1 – 2 cms per week through evaporation. Simply top up your Aquatec through the filter chamber when this happens .It is better if you add about  5 drops of stress coat to the new water before introducing to the tank (stress coat is a tap water conditioner ).

Before you top up your Aquatec, clean the front glass with the algae magnets provided, (it is very important to do this every week, even if it looks perfectly clean, as this will prevent algae from ever starting on the glass).
You should clean the back, sides and decor as required

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