Clams for nutrient redux???

[doch]

I was doing some snooping around at some point and reading somebody's tank write up (can't remember whose). This person had attributed their very low nutrients to the number of clams that they had in the tank. At that point, I came up with a plan to add a small clam tank with a bunch of cheap, clams in it to help with nutrients. Here is my plan:
Display -> sump w/skimmer -> water change tank -> Refugium w/macro -> Clam tank -> sump ->Display

I'm also running GFO, prodibio, and VSV (I'll be going to VV, or just vodka after this bottle is done).

My phosphates are at .05, my Nitrates are at ~1.5-2. I just started the VSV, so I can't comment on the results yet. Prodibio has been running for ~1 month.

Anybody have any thoughts on the clam tank, and whether or not it is a viable plan?