I've become a huge fan of drain to waste in coco. (For the skeptical, drain to waste does not have to be wasteful. In fact I find it saves water if done properly.) Here's the setup... 6, 5 gallon smartpots in a bathtub, filled with coco coir. Clones started in coco coir, and transplanted into the smartpots. GH maxi series + Botanicare cal+mag, pH at 5.8 My reservoir has a circulation pump, and a feeding pump. The feeding pump turns on once per day, and feeds the plants through home made drip rings. I use 3/4 inch vinyl tubing and a barbed T to create a loop, and drill 6 1/8 inch holes in the bottom of the ring. This sits around the base of the plant and feeds the plants, until solution just starts to trickle out of the smartpot, in about 5 minutes. I find these home made drip rings clog less than driplines, and are more suited to creating a slow stream of solution. Here's my question. Coco is commonly hand-watered, which is a wonderful way to spend some quality time with your ladies each day, but doesn't allow for watering when you are busy or away. Does anyone have a good automatic watering system that they like? I've been using the drip rings on a timer for quite some time now, and I like them, but the accuracy isn't exactly where I want it to be. Its hard to dial it in to the exact amount of time it takes the media to run to waste. Usually I have the timer set to "off" and I manually turn it on an off each day, monitoring when the runoff starts. I only use the automated setting when I'm not home. Any ideas?