Critical orange punch clones

This is actually 2nd week of veg, from moving clones from my mother/clone room. You'll notice my tds and ec, are incredibly lower, than you normally see. I used to suffer from, what looked like mag deficiency, followed by phosphorus deficiency, upon adding extra cal mag. This turns out, was excess calcium, and sodium in my tap water. Ppm average at 250, but i tested at 445 one day. Adding phosphoric acid, to ph down, was creating calcium phosphate in my pots. Not very soluble. I keep the nute levels low now, to keep the ph in range, with my ro water, which is ph 7.0. My tap water is 7.4. I foliar feed acti vera, every 3 days, at 1.5ml per 1.5lt. Im using bio bizz light mix. I have bio bizz cal mag, and will add some soon.