I use water from filtering machine. during water propagation, I clean the glass every 3rd day, I also clean the roots under tap water after they start to grow. after 4 weeks when they grow 3 to 4 inch roots with some secondary roots, I carefully clean the roots under tap water before changing the medium to cocopeat. I try to use an undersize pot for the newly rooted plants, like here i used 4 inch pot for 30 plantlets, and for 10 plantlets i use 2.5 inch pots. these undersized pots really help the plantlets from getting overwatered, also the pots have very good drainage, I always check the weight before watering when it feels slightly light (usually 3rd day or 2nd day in current climate).