I wasn't paying attention when I bought some Perilite to put onto of my soil to combat fungus flies. I purchased a MG Perilite with fertilizer in it. I then watered on my normal schedule with some tea. How long does it take until nute burn is visible?
24-48 hours in soil. You should be OK. The Perlite doesn't have a high percentage of nutes. I think it's like .04-.01-.06 N-P-K Good luck.