Anesia Future#1 x 2

I found evidence of spider mites on the left plant. It is my first time ever experiencing this. There are white dots all over some leaves. I used a magnifier and could see a couple on underside of leaves with 2 spots on their back. I could only find evidence of them on the left plant. The guy at the hydro shop recommended I do not use any chemicals at week 6 flower so I took his advice and purchased a bunch of packets of spical ulti-mites and hung them all over both plants. I am hopeful it was caught soon enough as it would be terrible to lose these so close to harvest.