I'd never heard of it, had to Google: http://www.tynevalleyaquatics.co.uk/#/biohome-media/4573328269
Sounds fine. Eheim has some similar products.
I don't typically use much specified biomedia in my filters. I prefer sponges, which give better mechanical filtration in addition to bio.
In heavily planted tanks, the plants themselves can provide the vast majority of the biofiltration, and do it better than filters as they actually convert the wastes into plant mass rather than just trapping it for manual removal.