I run Rowaphos in a small bag sandwiched between floss and a 1 inch black sponge in my media rack along with a purigen bag on the second shelf and chemipure elite hanging on the bottom rack.
I also have the Reef Dynamics skimmer that pulls way more then the stock skimmer. This along with not overfeeding, water changes every week, proper flow and about 20+ hermit crabs and snails hairy starfish ect my rocks stay very clean.
I do have some hint of cyano on the back wall and some green algae so I am contemplating a bio pellet reactor. I'm waiting for the reef dynamics nano reactor to come out soon just to help me with my phosphate and nitrate control.
In this pic of my back wall you can see the green algae and the little bit of cyano the rest of the tank is really clean.