Aqua Smart LED Lighting upgrade is 13.5 watts and recommend to fit aquarium size: 38-59cm (14-23?). This LED lighting range is Bluetooth ready and can connect straight to a smart phone or tablet via the free Aqua Smart App which has a range of features including: Instant controls, Instant weather & Instant timers. Also able to create bespoke pre-set programmes, then save, demo, play or delete the saved pre-sets. As well as group multiple Aqua Smart device?s together, or create multiple group's and change device's name's & group name's and get help & support, all controlled from your smartphone via Bluetooth.