Last night was the first night working as a custodian at an Engineering Lab. I saw one of their prototype water filters and was inspired! It's crazy how easy it is to build. The only problem is, where do I find a pump? Do I just get a sump and modify it? I realized the quality of filter I can make for soooooo much less money than LFS wants to charge for a filter half as good. Who knows, maybe I'll sell a few. What do you folks think? 
