filter floss???

[wickedfrags]

And with such a large pore size, well what exactly does it remove?

Originally Posted by Canadian

Read the link below first:

http://reefcentral.com/forums/showth...readid=1478964

I looked into these things before I started using polyester floss from Walmart and found I had a difficult time determining the "purity" of the floss with any certainty. I ended up using it anyway and I've found that, for whatever reason, my SPS polyp extension was less when running the floss than it was just using open cell foam.