I run three FX5's on a 180gal with a pretty alright stock. Three of the FX5's have Bio Max in all three trays, but one has a blue filter pad in it. I clean the blue pad every water change and replace it every month. Clogging is normal for the blue pad, that means it's doing its job.
With regular maintenance and weekly water changes I don't see how your water isn't crystal clear.
With regular maintenance and weekly water changes I don't see how your water isn't crystal clear.