Truthfully, I think a bioload is overdone. There are more important issues. Such as room for growth, territory, and grazing just to name a few. Really, live rock has more than enough surface area to hold a ton of bioload. Along with proper tank maintenance, it should be very little of an issue. Stocking 20 chromis in a tank is completely different than stocking 20 tangs of the same size as the chromis in a tank. There is more stress through territory disputes than there ever would be of a bioload problem, within reason. And by that I mean not adding 20 fish to a 10g tank the day you set it up.
