Fish-Mate Bio SUPRA also Called Alfagrog
Alfagrog or Supra Pond Bio Filter Media.
This filter medium called Alfagrog in the UK and Supra in the USA is by far
the best low cost filter biomedia on the
market.
It has about 40 times more bacteria holding capacity than all plastic cylinder
types of biomedia. The media is ceramic and is finely sintered so it makes an
excellent easily cleanable mechanical filter medium also.
Best USA supplies Florida based
