The type of fertilizer isn't that important but, the discussion we had just recently in:
The thread "Happy New Year 🎊🎉🍾 and our Orchid Blooms in January 2019" in
Orchids forum
would suggest a lot of us like Dynamite slow release in the red can.
The problem with the fertilizer you chose is the form. The spikes fertilze the spot you stick them so you have one spot of over-fertilized medium and all the rest of the pot has no fertilizer at all.
