Just wondering if anyone had some old 48" ati t5 bulbs that you are not using. I want to try a few color combinations on my tank before I order bulbs. Thinking 4 B+, a purple+ and a coral+ bulb, but afraid that it may be too blue, also wonder if the purple is worth it (better color in red and green but low par rating). Hoping to find some that have not shifted too bad for comparison reasons.