My nutrient export was Purigen and Chemipure Elite... striped my water completely and why I'm starting to dose the KNO3. I removed it all and will replace with BRS ROX carbon and GFO in bags in my media basket. Since I'm also fishless right now(5 more weeks), I don't want to just dump food in the tank to turn into a nightmare of algae. I do target feed the duncan once every week or so.Sounds good. Can't wait to see your progress! Best thing that happened to my tank. Besides water changes, do you have a way to export nutrients if it gets too high? Skimming? Maybe some bioplastic reactor? Macro algae? It seems kind of redundant how I add nutrients, but I also skim every night for 6-7 hours and I also have so much chaeto it's crazy! It's the method that works for me to keep No3 where I want it.