I have a 48" coralife and I notice my one bulb crapped out and I think my other one may be on the way out as well. I have t5 ho lights and they are super acitinic, power glo, marine glo and the unknown is blown. My question is what is the best lights for my 4 light system. I think my super acitinic may be going as well. What could the unknown light be?
2 actinic, and 2 white (marine glo or power glo) will allow you to grow some low light coral. It will probably not provide enough light for most anemones. For that you would need to look into either LED lighting, or metal halide.