It's good for lowering pH/gH for shrimp, and it's not like plants don't like a lower pH as well. Depending on which aquasoil you get, they usually come with nutrients in them as well.
Note, it's loaded with ammonia at the start (great for a fishless cycle or feeding the plants when you first plant) but can be bad if you plan on dumping in the gravel and livestock the same day. It usually takes 3-6 weeks for the ammonia to quit leeching from the soil.
20g platy, , 2 x 10g shrimp, 3 x 20g shrimp, 7.5g shrimp and 1 great dane/mastiff puppy.
Its awesome as an active substrate. Especially for people like me with higher ph water that needs to get knocked down a tad.
Its great for growing plants and very easy to work with. At least compared to flourite and standard gravel