Just an update with more info. The first night I tried this with two friends, using about a typical sized bowl of weed. It was enough for all three of us. Vaped again the second night and still plenty enough for myself and gf! The weed is a nice brown now and is ready for edibles so I will save it away for a rainy day. The efficiency of vaping is awesome!9 You really do get to use your weed over and over so you are using less and getting more bang for your buck.