I have a 29g tank that I got for free that I believe is pretty old. I've been using it for almost a year now in addition to however long the previous owner had it. I know I need to replace my lights, but I'm not sure what the best two bulbs would be, or if I should even replace my lighting structure. I currently have a white bulb and a pinkish one, but idk their ratings or anything. What would be the best combination of two bulbs to get? I only currently have java moss and fern in the tank. Thanks! Ok I checked and the light fixture says "30 in twin tube reflector. 120 volt, 40 watt, 60hz" Is that good?