This is really basic stuff - especially for the gang that usually follows along. But, in case a new grower stumbles on this journal, maybe it will help them. It is one of the few things I've learned that feel confident in recommending and teaching. For the rest of you old-timers, move along. There is nothing to see here.
There has been some discussion about watering techniques and whether letting plants dry out is better than a constant supply of water that lets them take whatever they want. I'm of the school that wet/dry cycles are preferable. I don't find it mean or damaging to the plants. I think of it as exercise for our little ones. Like children given a choice, some may opt to watch TV rather than go hiking. But once adulthood is reached, which is likely to be more healthy - those that work, or the couch potatoes? Use those muscles (or roots), or they won't develop as well. This probably isn't an apt analogy, but it is the way I think of it.
To allow for a complete soak I use a pot of the same size, or one size larger. I place a trash bag inside the pot to keep it from leaking, and nest the plant to be watered inside. I add water and/or nutrients until I can see some of the solution around the edges. By stopping at that point, there is very little waste yet the plant can soak up the water from above and below. If you use pots the same size, you have to go a little slower initially, but there is almost no waste - maybe an inch left in the bottom of the outer pot.
Pitbull clone in 1 gal pot ready for a drench using a 2 gal pot
The same plant an hour later. Right now she needs this every three days. Once it gets to needing water every two days, I find it is time to up-can. For the up-can I prefer to do it when the plant is dry. The root ball is light and holds together well. The plant won't miss a beat and will grow roots out the bottom of the new pot in a matter of days.
I know this is simple stuff, but with this method and a good porous soil, you can go from a cutting to 1 gal to 7 gal all in about 4 weeks total. For indoors, I plan to veg for two weeks after they hit the 7 gal pots, then flip. My hope is it will let me grow more plants in my limited space and get three grows done before I move back outside next spring.
BTW, these Pitbull cuttings really like to grow one and three fingered leaves after cloning. They also grow four fingered leaves sometimes. I takes a while for them to graduate to 5 fingers and that's the most I've ever gotten from them. I've never seen 7.