I have two watering methods when my plants are inside the greenhouse, one is with a hose that is attached to a well. That water is stinky sulpher springs water. I also use an old two quart tea jug that I use when I'm mixing the fertilizers for the sprayer, or just to pour directly onto plants in pots. When I use the tea jug, a large plastic cup helps me make sure I only put so much on each plant. I don't drench them when they are indoors the way I do when they are outside in the wind. When possible I just use a hose with a spray setting that mimics a gentle rain. But here is the thing; watering is a rather personal thing. If you like your method and your plants like it...why change it if it ain't broken? lol Potting, potting materials, your watering schedule...all are dictated by your location and your plants.