Sniperhank
Giant Clam Addict
Well, the deal sounds pretty good to me. Ro/di is really important when it comes to keeping corals successfully. I had mine hooked up to my horrible well water. Resin would last about a month. Now that I've moved into town, I've made more water than I could have ever hoped to create without a dent in my resin. It all depends on what the TDS going into the ro/di unit is and what is in it on how fast your resin will be depleted.