Aquaponics system calculation

Hi there, this is a little project. I did calculate the Biofliter Calculation in pdf(final project file)and i got it from filtration power point and just plug our number of size of fish tank and other you will see it in pdf file. I uploaded the pressure&flow presentation for you to calculate the Aeration needs and Max stocking density. should be straight forward from the power point. plz let you mathematic clear to understand.