That sounds good but you still may be low in the nutes somewhere. I'm not familiar with fox farm nutes so can't help you with that but with RO water you definitely need CalMag. During the later part of flowering I'll get close to 10ml/gal w/it for my hydro setup.

click on the link in my sig to my old grow log and in the first post I believe I listed the ppms of each thing I used.....I always use Calmag at 50 percent of the total ppms in my rez.