New from Arcadia this controller allows you to control T8 lights which are between 18-40w. The unit comes complete with Ultra Seal lamp holders and brackets. A long mains lead (1.5m) allows for easy mounting of the unit. A further 2m cable leads from the unit to the light tubes! The Arcadia 18-40w controller has independent lamp circuits, meaning that if one lamp fails the other will continue to run.The new Electronic controller from Arcadia is IP67 waterproof and can run any T8 tube from 18W to 40W meaning that as you change tanks and light tube sizes you don\'t need to change your controller! Suitable for freshwater and marine aquariums