I run 2 regular hydras over my 93 cube. Have the about 12 inches of the water. I'm running mine up to about 80% on the blue channels, 55% white and about 20/25% on everything else. Don't be afraid to ramp up the blues and white but take it easy on the uv to start. After talking to hockeynut about it a few days back I'm actually ramping my blues and whites up more. He's running two Vegas and has everything up a lot higher.
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