Ravi, i don't think is gone work.
Fell free and stop by , may be a long discussion about .
I have some experience , how ?! and why ?! to control the bacteria.
This filtration , in my opinion wont work. # 1 Enemy for Reef is Detritus ( in my opinion) in few weeks or months will work against you , when Detritus settle in those blocks , organic PO4 will be inside, hard to check, then inorganic , then to late to do anything.
Macro algae remove most of NO3 , problem is ....how much you have to remove to control the balance, you don't want zero NO3 or PO4 , but you need some. In my opinion 4 to 5 ppm NO3 and 0.02 to 0.05 Po4 , control nice grow and color and good immunity of the system . The main point is.........what you try to grow ?! SPS only ? LPS only ?! or mix. Mike C. got great way to control , not only detritus , NO3 and PO4.
Great Alkalinity to maintain bacteria in to the system is 7dKH max. 8 dKH. Final word is this , those blocks will work just like Bio Balls , when Detritus got involved , problem show up.