Here is a little bit of rock I have curing in a tote. I also have several lbs in a trash can in the garage, a bunch in a tank at my mothers house, but I will probably need twice what I have, I think I have around 120lbs or so.
here are some pics of the utility sink I installed and the rodi unit I mounted to it. I got this unit off ebay. Pure Water Club, great deal. I actually had the house plumbed for a fish room when I built it!
Here are a few of the tank.
external overflows, I am really pumped