The tank has the following lighting-
2-400 watt MH, 20,000k XM
2-400 watt MH, 10,000k Hamilton
1-175 watt MH, 20,000k XM
2-6' VHO actinic
I'm not an expert but here is my interpretation
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The higher the Kelvin rating (10k, 14k, etc.) the more blue and less yellow the light. Bulbs down in...