Since 11 of the fish are already full grown, I already have over half of them in there with zero water quality issues. So I already know I can keep more than half in their right now. When the others become full grown I will watch the parameters and aggression and adjust accordingly. I actually think I will be okay as long as aggression allows. I have 125 inches (length wise) of fish right now. Based on the fish I have which are still growing there is still a combined 40-50 inches of growth between them. So as far as total length in growth, the potential of my tank is 70-75% there already. Since I am going to remove the massive pleco one day (pm if interested), the total length in inches for all the fish in my tank will be 160-170 inches (I know they get bulkier too, that's kind of a given). My point is that if my maintenance is so little with my current stockload (nitrates at 10 ppm after 20 days), I doubt that the added 35-45 inches of fish in a 210 gallon will catipult wc's so drastically that I can't handle it.