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400W is a lot of light for 20" deep tank. I'd say 12" or more off the water. You have a chiller? The T5's, from what I've read, need to be around 3" - 5" w/ SLR's to be really effective. HTH
Welcome Hitman....
Definitely come to the meeting. You don't have to be a member to attend, participate in the raffle, or enjoy some good eating.
Hope to see you there!
You'll want to run the fans whenever the t5's are on. The reduction in heat dramatically increases both the intensity and life expectancy of the bulbs from what I've read.