Hoppy- I actually just read through a lot of your lighting thread not long after posting that! I was impressed by the sound logic debunking the watt per gallon rule. This forum has several great lighting threads I was very pleased to read through. One thing I have not figured out yet is color temp. Trying to decide between double 7000k vs 7000k/10000k fixture. Have not had much luck finding pics to compare how they look... any advice for which will do better for growing and or for that awesome crisp look?