I just purchased a TurboKlone 24 a few months ago. So far I have been able to propagate a few various things such as calamondin oranges, various lemons, figs, and mulberries.. not as much success as id like but it works well. oh and some flying dragon cuttings worked too which I was very surprised as those are a little difficult at times. Finger limes do not want to work though! This is using rootriot gel
The biggest reason it doesn't work usually has to do with water pH and temperature. My light warms up the tub pretty quick and anything over 75F can create some bad growth that ends up killing the scions.
I've seen these things do cherry cuttings before as well, so its all ab out the environment. I'm going to try to add some root riot cloning liquid to it and see if that helps me get a little more success. I was told that you could put some peroxide in the solution as well to ward off pathogens but I haven't tried that yet.
Figs lemons mulberries usually quite easy to root (exceptions). These root up very easily outside for me where there is little environment control (in perlite).
Calamondin flyingdragon and finger limes will not root up for me, I will have to apply concepts from this turboclone and see how it works..
Peroxide will kill most of the good and bad microorganisms so you need to keep on using it. Also supplies more oxygen to roots, as well as an aerator in water. Also keep lower temps but not too cool (higher temps= less oxygen and more algae growth etc). I have rooted some things quickly in peroxide-laced water but others not so much (similar results with sprouting seeds in peroxide).
I have also rooted figs and some other things very fast in aerated water with mid-strength, ph balanced(KEY-check ph and adjust regularly) nutrients. I thought high N urea/ammonia would not be conducive to rooting in water but found out otherwise at least for some things. I have a strong inkling that the presence of copper and sulfur among maybe some other nutrients in the fertilizer inhibits fungus/some bacteria in this aerobic environment setup. Also you can use black material to block out algae growth. Algae can smother small roots and use up nutrients throwing off pH as well. Their respiration may also affect gases in the water and during certain light/dark periods..