Hi! maybe this is covered elsewhere, but this thread seems ambiguous on the subject, and I'd like to clear this up.
I just tried a side-by-side comparison, and got amazing results! I think it's because the cloning powder got more time on the stems.
These were all cut at the same time, with the same methods, on 4/1. Today is 4/10. I put most of them in my spray cloner, and just 5 of them in my 3" net pots with hydroton. Same water (1ml/L JumpStart, ph 5.8, 71F,) same water changes, (one, after 6 days) same spray frequency. (30 seconds every 30 minutes.)
I just moved those 5 back into the spray cloner to make room for vegging plants.
Guess which 5 were in the hydroton?
Pretty hard to argue with these results. Hope you find them useful! I'm now going to make a dedicated hydroton-based cloner. I'm thinking a 14 gallon tote with as many 2" net pots as I can cram into the lid! (Probably about 50.)
Peace.