To tell you guys why I went with 5wpg, I was reading Erik Olsen's article: Lighting Level: What's ideal? and he says, "For the smallest sizes, 8 watts per gallon is too little! For the larger tanks above 100 gallons, 2 watts per gallon is too much. " So using a wattage estimator for lighting in Amano type aquaria, I concluded I needed around 90 watts.
Here are the pages:
Erik Olsen's Article:
Just wondering what everyone's thoughts on these articles are?
Thanks for all the help,