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I'm confused as to how much light I have on my tank if its high or low light. I originally thought I had about 1.4 wpg but was told that doesn't apply since I have t-5 bulbs. I currently have a Coralife aqualight with one daylight 10,000k bulb and a colormax bulb 6700k both are 14watts. I have a 20 gallon high tank.