Hi Weedhound, this morning the ph was still at exactly 6.0, and ppm still at 20.

I've added the 3 part nutrients to my res a few minutes ago, and after an hour or so it should be fully circulated in my system.

After adding nutes, the PH dropped to 4.8. I know I'll need to PH Up it after it's fully circulated. We'll see just how much later on.