[harif87]

I beg to differ. IMO (and i know im not the only one with this take)tank depth should be considered 100% of the time. I mean after all you wouldnt set up a 10g nano with a 275 watt MH on there. On a few other boards that im a part of, the first thing they ask when there is a question on lighting is "how deep is your tank"

Also, how will the reds penetrate if the light itself isnt strong enough? Thats one of the reasons why the wpg rule went out the window.