Ok, just making another note here, I will add this to the next update as well.
Looks like my UC Roots may not arrive this week, could be Monday. So while we wait for it to show up, and with the on going unexplainable dwc issues going on, I decided to go with some H2O2 in the res.
I did a little searching around and found some ratios to use for different % h2o2. Drug store here in town is only place to grab it and all they had was 3%. The greenhouse a couple towns over may have had something but doubtful. And I wasn't going to the city for food grade. Lots of people have used the drug store stuff with no issues.
So I added it at a ratio of 10ml per gallon, a little lower than some of the recommended doses. Others I found were 3ml per liter, which would be up to 15ml per gallon.
Had the plants removed from the buckets, added 30ml slowly to each res while it was bubbling to get it mixed up good. Waited a few minutes and moved the stone around some. Checked ph and tds, was still the same. Then set the plants back in. Now we wait to see if anything happens I guess. I'm running out of options, but they continue to grow, slowly.
Here are the readings for the res today.
Ph/TDS/Temp(c)
Bucket #1 - 5.62 / 707 / 18.3
Bucket #2 - 5.56 / 676 / 18.1