[kickstart]

I usually water when the very lower leaves begin to show droopiness and I usually give them a good blast of water. I would guess they get about a gallon if not a bit more... I look for a small amount of run off (water coming out the bottom vents on the pot). The best way I have found to determine if they need water is to pick up the pot with one hand. It is an acquired sense that comes with time and experience. If you let them droop too much you will notice leafs dying off a couple days after watering.