Help and Advice

hi all, im hoping someone can point me in the right direction in purchasing some moonlight LEDs for my tank, i have a juwel rio 240 and have the problem where the lights are on the same switch, so lights are ether on or off.. i have a T5 High-Lite MARINE white and a T5 High-Lite BLUE in the hood both with reflectors but as these are on or off. im wanting some blue moonlight to put on before main lights come on and so i can have these on after the main lights go out at niight, only problem is...