New V2O Coral Feeder is a big improvement over the previous model; and far superior to any other feeder on the market. Significantly longer than the previous model: 14" overall length Clear plastic instead of cloudy Medical laboratory quality rubber bulb, made in the USA Accurately marked at each 1/10 ml Use it for feeding or for dosing medications, calcium, reef supplements, etc The "fine point" for feeding phytoplankton and zooplankton to corals and reefs.