I don't see the need for anything like that. Do the rad dance with some vinegar and distilled and you should be fine. What catches anything that stuff knocks loose?
thanks. as for what catches crap knocked loose, i have two inline micron particle screens for the occasion.(nice having a few labs to pull these from !) doing the macarena with a 720XT is not gonna happen.
AsRock E3Gen3, 2700k @4.6 with cuplex HF, 2 HD7970s with aquaC waterblocks, 16G GSkill 2133, TJ09, ST1500 ps, plextor 256 ssd, 2x1TB WD VRs raid 1, HP 30 inch. Aquacomputer 720XT Mk IV.