Can I use APT JAZZ with inert substrates?Updated a month ago

Coarse grain inert substrates such as pea gravel have no ability to bind nutrients - any root tabs or substrate fertilizer will diffuse quickly into the water column. Adding root tabs in such a scenario only creates an illusion of root feeding plants - the aquarist is actually just fertilizing the water column. 

Smaller grain inert substrates build organic material over time and the slower water circulation through the substrate allows capturing of some substrate nutrients. APT JAZZ contains organic material and releases ammonicial nitrogen slowly to enrich substrates. Ammonicial nitrogen binds to organic material and aquasoils/soils. APT JAZZ could be used to limited efficacy in smaller grained inert substrates, but should not be used in coarse inert substrates such as pea gravel.

Substrate fertilization alone can never make an inert substrate equivalent in performance to aquasoil/soils. The textural and composition differences that make up soils are distinctively different from what inert substrates offer. For many species that do particularly well in soil based substrates, inert substrates + root fertilization provides no equivalence.