Fertilizer questions and "weakly, weekly" clarification?

[Kilmiquix]

What is the general opinion of slow release fert like Dynamite?

And, does anyone know if it is safe to put slow release pellets on the beard of a grammataphyllum? They are such heavy feeders that I'd like to use Dynamite slow release, but I don't know how to do it besides putting it on the air roots.

And what is the opinion of little fertilizer bags attached above vanda roots?


Regarding the phrase "Weakly, Weekly", does that apply to specialized orchid fertilizer like OrchidPlus or to generic 20-20-20 or both? Should I be diluting the orchid specific fertilizer or using it as directed on package?