Hi all, i have just got a arcadia classica stretch LED marine light unit but for my freshwater aquarium. The reason why is that it was cheap. On the box it says, 12000K(1.5W),RGB (1.5w) and actinic blue (0.24w). the unit is 21 watt and is for my 2ft tank with easy to grow plants. there are two switches, one for the blue light and one for the normal light. Is this ok on my aquarium or not? I don't use the blue light at all and i leave the light on for 7-8 hours a day. any feedback would be great! thank you.