I guess I will comment on this... I too had this question when I started my tank up... I currently have roughly 35-40lbs in my 36g, which looks like a little bit and it seems to be doing pretty good, 8 months strong. I know, I know the tank is still young but, for what it's worth I have had my share of Cyano, algae blooms…etc, and have bounced back! I also don’t have a sump. My ammonia levels are always zero, and nitrate levels stay very low lol for the time being.
I personally think that each tank differs due to the bio load. Also, the skimmer probably has something to do with it to. If you have a good skimmer, well those bad things don’t have time to break down in your system, therefore the bacteria doesn’t have to work as hard…
Ah anyway, that’s my story, thought I would share lol.