[tang daddy]

I use to use NPX and Vertex however they kinda break down fast and without good strong flow fuse and gum up.

My friends started using Warner Marine which are slighty larger and require less flow and don't break down fast, I use them now and swear by them in combo with the vertex uf-20 which can handle stronger flow... I always also run an algae scrubber which is a awesome combo for stripping the phosphates left over by the biopellet.