ALFAGROG in not a by-product, it is made from certain clays and the baking process sinters it, that is, it produces a product with literally millions of tiny hole which are all available to bacteria to colonise. This gives alfagrog an enormous surface area which is why it is one of the popular biological filter media available. Easier to handle when packed in media bags.
Surface area 270m² /L

ALFAGROG E40 15kg

MEDIA BAG made from tough and durable polypropylene with a draw string included to tie up the top.
Capacity loosely packed is 1 cu ft and 1½ cu ft tightly packed.

MEDIA BAG

MEDIA GRID made from tough and durable polypropylene this grid measures 16" x 24".
Can be easily cut with handsaw or jig saw

MEDIA GRID

MEDIA TRAY Drilled flat plastic sheet cut to size.

MEDIA TRAY 1m x 1m x 3mm

Henderson Plastics Filtration catalogue

Henderson Plastics Ltd
Lyng Hall Road
Wood Norton,Dereham
Norfolk, U.K. NR20 5BJ
Tel: 01362 683364
Fax: 01362 683364
email Send Mail

BIOLOGICAL FILTER MEDIA

Biological water filtration media.

FLOCOR