Been using their starter pack they provided to me, and can say they are doing well under it.
I've tried other brands before and they where the worst, this one is descent and should be considered. I come from a soil and amendments background and this was just as easy to use, bit more mixing into the solution but still easy and simple. I did not follow their feeding guide on ML/L, but did use the same ratios of products used altogether, added it all in then diluted down to my desired EC. Was in a coir/perlite substrate with a PH between 6-6.5, tap water and 2-gal pots with autoflower genetics.
Check em out if they are available to you.