Top critical review
Don’t know what to think, the stones are pretty small in size and many are discolored
Reviewed in India on 25 July 2021
I expected better quality from Seachem, however I was surprised to see many discolored non pumice stones mixed with the media. More over most pumice stones were tiny, like as if they packed this lot from left over batch of tiny leftover rubble.
Had to clean it under water several times to remove the powder and then use it.
Overall the amount of media was more than expected, can say easily more then 1 kg, hence it compensates for the non pumice stones and tiny stones. But you need to use fine mesh bag to avoid matrix from flowing into motor impeller.
Can’t say about effectiveness, as I have other seeded media over 5 Kgs already taking care of the nitrites. Just wanted to try out matrix as a long term media instead of ceramic rings.
I guess time will only tell how good it is lasts. Will write a review again after 1 year