hello... in regars to some of the conversation on the "snake-oil" and more fish/less fish fish load talk, i have a question - what is considered a medium amount of fish in a well planted/lighted/injected 90 gallon tank? i seem to remember the old addage of "1 inch of fish per 1 gallon of water" but that was from my childhood and have no idea if it has any basis in experience. thanks -john guild