Thanks...this tank is running absolutely perfect and so much better than how I had my 240. I dont add any water for evap...nada...it is hidden enough at the top for the 1" it goes down between water changes. Super quiet...water is always clear and all I do is drain and fill. And I love the shimmer I get from the lights...may up them to 50w ea from the 30 they are now but other than that perfect!