Stalled flower spike

[Jinh]

I received a Phal Tetrapsis Coerulea some months ago. It arrived with a flower spike just starting to poke through, but soon aborted likely due to stress of shipping.

A few months later, another spike started emerging and unfortunately my dog knocked it over and broke the spike.

Some more time passes and a third spike starts to emerge, so clearly this plant is intent on blooming. The spike grew about 7 inches or so, but has now done nothing for probably 2 months. I had started using a generic bloom boosting fertilizer, and in this time it has grown 5 new roots and just started on a new leaf.

I looked at the fertilizer content this morning, and the NPK values are 15-30-15. With the growth of the new leaf and roots, would this indicate too much nitrogen in the fertilizer?


Imgur: The magic of the Internet