I only run carbon. I pack floss and sponge to take out as much funk as possible. if the filter isnt pulling out funk its not a filter its a reactor.
If its not being filtered its still in the tank.
generally running the AQ I use one strip of floss under the sponge. carbon sits in a bag. Ive not run GFO or No binders in them as ive not needed them to control exess No and Po. I use a hob refugium for that.
the current 30 cube w the AQ is actually running pretty low nutrints so no hob fuge on it now.
BTW easiest way to lower No is water changes. No floats. Po binds.
for me in the 30, a five gallon wc is one bucket. if the tank is new er, consider a bacterial booster like Prime stability or Mb7, probidio.
you may want to look at this product as well. Basicly gfo. but is mechanical AND chemical. cheap too.
http://www.marinedepot.com/Poly_Fil...kzWK5h6MRfQq6MThvAgBE3dnm9ih8rNnt8aAtHv8P8HAQ