MG plant food spikes

i just got these MG plant food spikes with 6-12-6, will this be good for my 3 week old plant?

come on........

https://www.rollitup.org/indoor-growing/5738-plant-food-spikes.html


and NO...why use nutes u cant control?

dont use. as said above.

no don't use thoes spike because the spikes can relise none , little or to much nutes with out you knowing it

its got low nitrogen and dec phosphate

are you sure