So...I've been having quite the slimy hair algae problem and I believe I've found the culprit...my RODI. For the first three or so years of my tank, I had used Walmart or Target "Drinking Water" and everything was doing OK. I figured, I may as well save money (in the long run) and buy a unit. Plus, it's nice to have more "control" over your water. So I thought! I have the AquaFX Barracuda. And within the past few months changed out everything. Could it be some bad DI resin? I dont collect water til it hits 0PPM, which sometimes takes a little time. Am I waiting too long? Should I take 1PPM water? I'm in Yonkers and TDS in is usually 45-55. Help is greatly appreciated bc I'm on the verge of giving up .:sigh: