It's time for me to become a bit more automated (and lazy) and so I am looking into automated water top-off systems. Two-Part Bulk reef Supply has what appears to be a good deal on the Aquahub Top It Off system: http://www.bulkreefsupply.com/Auto-.../DIY-Top-it-Off-Kit-Premium/product_info.html I was wondering if any folks here have experience with this system or can recommend another. This system does have two sealed high and low level float valves so it does appear reliable. And you can't beat the price assuming it isn't junk.