All the technical stuff was over Lily's head, but she liked watching her friend work and JJ was like a magical wizard when it came to building all kinds of cool things. For the most part Lisa had just been getting her water from the barrel cactus' that she grew; tapping them and letting the collected water from each one fill up a few buckets, before taking that water to take care of the rest of her plants. The process wasn't hard, but it was time consuming to be sure. So the prospect of having some kind of automated system at the greenhouse/school was amazing. "I've got a few barrel cactus that provide a good deal of water, but if you think a reserve tank thing would be better than I totally trust you, JJ."