Here is a chance to own a very large Deltec calcium reactor for a fraction of the cost of a new unit. It is over half full of Rowalith media as well, and I may have a 1/4 of a bucket of unused media as well. I am asking $550 for it. You cannot get one this size anywhere near this price new. It is approx 3 foot tall. It is an awesome unit, and is so much easier than adding two part to your system. Here are a few pics: