Its best to mix your own. I use bagged orchid mix, a combo of the special phal mix that has the big chucks of large coarse perlite and charcoal and bark, Jungle Grow potting soil, and peat for all of my anthuriums. You can also use crushed lava rock, aliflor etc in your mix.

Thanks, sounds like a great airy mix!!!

This page may be useful.

Here is a link that might be useful: Growing Anthurium species

UBC Botanical Garden recommends the following mix:
50% Miracle Grow Moisture Control Potting Mix
20% Peat Moss
20% Orchid Potting Media (they prefer Schultz brand)
10% Perlite
All mixed throughly

This is what I will be trying when I repot my Anthurium, except I couldn't find the Schultz brand of Orchid media, so I will be using Better-Gro brand.

UBC grows close to 50 species of Anthruiums in their artificial rain forest. So hopefully this mix will work in my house. lol

Here is a link that might be useful: UBC Anthurium Info