Dinafem Blue Cheese Autoflower

Running a Marshydro COB 300 (100w) and an old MarsHydro 600 (280w?). Dinafem Critical +2.0 auto running alongside which is 5 weeks in. About 70% Coco, 30% Perlite. Both the coco and perlite were rinsed with an approx 230ppm solution (50ppm tap water, 180ppm GH FloraMicro and Bloom, and 1 ml/l Rhizotonic). Feeding every other day at the moment till 15%-20% runoff. Soon as the next leaves show themselves I'll start feeding every day to runoff. Currently day 3 since it sprouted from the ground. This one seemed to germinate really quickly showing it's taproot within 30 hours so was half expecting it to take off once it showed it's head but seems to be growing pretty average right now. PH down is Growth Technology and when I prepare my nutrients the reservoir I mix in is only 5 Litres so it takes literally a tiny droplet to adjust the PH. Rhizotonic brings the PH up. *Amended diaries as put wrong lighting schedule - Had put 18 on instead of 20. Now reads correct 20 hrs.