Has anybody tried the cheaper LED strips and bars all comming in from China over planted aquariums? Some of the white, blue and blue white combined bars look like they may be of some use either in combination with or on their own for plant growth, does anybody have any experience with these? Im looking at some pretty nice looking and very cheap 20cm 8 LED bars for my nano which combine blue and white light. Its A bit blue for my liking but in combination with maybe an extra pure white bulb it may tone the colour down a bit. However are these actually producing a spectrum of light actually useful for the growth of plants?