@DogFish - there is no rocket science build to it to be honest. For the nano cubes I use a simple orange coloured 15W night lamp. And in my fiancé's I used a simple cool white 6500K 14W T5 which was covered with yellow paper towel, single in the middle and double layer at the sides to give the red-orangish view. Hope this helps..
@partobe - hehe..playing around with a tank is always blissful..
please let me know if I can help scape wise for ideating in future..