AeroVoir watering

Yes, the hole for the water tube is above the water-line. Here is a diagram I drew (poorly) to help illustrate what's going on, because I have trouble explaining without a visual aid:

Put one end of the tube through the drilled hole on the reservoir and then start the siphon - suck water through it from the reservoir until it starts flowing - the end of the tube needs to be below water-level in order to keep the flow going. I keep a cup nearby to let the water flow into to make sure I've got the siphon going (again, hold the cup below the water line on the reservoir). Once you've got it going, pinch the line closed (like kinking a garden hose) and push the free end through the deck hole you're using, far enough down that you know you have it in the water inside the Aerogarden. The water levels will equalize and stay that way until you run out of water. The plants use the water in the AG, the tube refills the garden from the reservoir as water is pulled into the plants, and the bottle feeds the reservoir. Where the water-line is is dictated by where the bottle mouth meets the water in the reservoir, and when the bottle runs out the water line will fall as the plants use water and the siphon attempts to keep the water levels equal on both sides. Meaning once the water runs completely out in the bottle the siphon may reverse and start pulling water from the Aerogarden instead. I wait until the water level is down into the neck of the bottle before refilling - that's the easiest way to get the bottle up without raising the water level much in the reservoir and therefore the level in your garden. Please let me know if that helps at all or if you have any questions!