Planted Tank Enthusiast
Join Date: Jul 2008
Location: Lathrop, CA USA
If you are strictly focusing on shrimp alone than go with the Fluval shrimp stratum. I have it and the shrimp like to roll the pieces around to clean all over them. If you are focusing on plant heath, than go with the other.
The shrimp stratum has some benefits to plant heath, but not as much as a plant specific substrate.