I am around week 20 with the cloner. Here are my thoughts. Fig cuttings, not so good. It looks like some roots are forming, but barely visible, sort of like Brooklynmatty's pics. Plants and seeds are doing much better. I have strawberry, pineberry, tomato seeds, and melon seeds. The Pineberries did the best growing thick white roots that stretched down to the water. The tomatoes and a hot pepper seed all germinated and are growing nicely. The melon did not germinate. Then I added HTH. I checked the Cl at 1.0 ppm. This turned all the thick white roots an ugly brown. Fortunately, the plants showed no ill signs above ground and after a week or so, I see signs of white growth on the roots.
Conclusion: HTH is not a safe alternative to clear-rez. Aeroponics benefit plants more than rooting. I had found a video on Youtube explaining this, but I can't locate it.
I found the posting:
If you go to 7min, the gentleman explains that the aeroponic system started out slower than drip and soil. It wasn't until the root system developed before the aeroponic plants overtook the others. Which means potting once roots form is preventing the system from benefiting from its major advantage.