Water changes are fairly important, and really should be done occasionally. I do them less often than most people reccommend because I find it is much more time-efficient to just put a couple extra in the cloner and not spend quite so much time with them. I have found that all my setup needs is to have the water changed after the 2nd or 3rd day and after the 6th or 7th day. If some are being unusually stubborn and need to be kept in more than 10 days, then I do it about every 6 days. I experimented to get there and you should to, in my opinion. At first try what most people recommend, which is: change after the first and second day, then about every 3 or 4 days.

Additional things I do that are not necessary, but probably help:
- Dip the scarified stem into powdered rooting hormone just before putting it into the cloner. Most will wash off, leaving a powdery residue in your water and on the bottom, but a little seems to remain, which I'm sure is helpful. Not that it matters much but I use Shultz Take Root.
- Put a little B1 into the water. I use a drop or two of SuperThrive, but any B1 suppliment will do fine. This is supposed to aid in rooting.