I understand your thoughts on bioload and crashing the system, but I really feel everything will be okay. I can even put the LR from the sump inside the back chambers of my cube to prevent any crashing. I know everyone wants me to get a larger tank, but at this time I am not in the stages to do so. Lastly, I know we spent a good chunk of time making the tower. We both took time out of our days to make it. But sadly it is way to large for the closet and I personally don't want my cloths to smell like skim. Believe me, I wanted it to work, I dropped hundreds of dollars into this project. So now I am going a different direction to complete the same task without taking up lots of closet space. I really wish you could help, if you change your mind let me know.