The interpet Delta therm aqurium heaters are based upon interpets extensive knowledge of heater production and they have introduced a new heater to the market. This heater is made from thickened safety glass with a new positive click control for temperature adjustment. It also has a thickened plastic cap for extra safety.
50w - 46inch long - 23 to 45 litres
100w - 61inch long - 45 to 90 litres
150w - 76inch long - 68 to 135 litres
200w - 91inch long - 90 to 180 litres
300w - 122inch long - 135 to 270 litres | 
