Searching for Mr. Good LECA in France

[Henry]

I'm looking for LECA in France, billes d'argile.

I see Hydrozone FR has PLAGRON euro pebbles,
90% nini/maxi particle size range is 8-16mm so that might be good?

The one star reviews for Algoflash pebbles on Amazon FR revealed a lot of people
not getting what the picture showed, so that's a gamble.

When I asked at the local Gamm Vert they didn't know what I was talking about.
Although I don't speak Francais, so…LOL
But their website Gamm Vert shows many brands.

Anyone know a favorite brand here?
merci beaucoup,