OK, enough is enough.
Short of pulling these 2 and starting over, I removed both from their net pots, and soaked the Brite Water coarse ceramic thingies in 20% H2O2. Meanwhile, I removed the starter cubes, both were quite wet (no bueno). So, essentially these are now clones, which allows me to feed some nutes from the top, which should help develop new roots along the stems above the bottom of the net pots. Some roots were lost in the process. The brown stained roots are from when I added Kelp, this was washed off as much as possible ,although the NPK RAW grow nutes turn the water brown, but should not be enough to stain new roots
Fingers crossed