Hello all.\nI am building a reef in my 110 (with a 30 gal sump of LR). I currently have a Tetra test kit which covers the basics, nitrate, nitrite, pH, ammonia, and Kh. \n\nWhat kit/individual tests do you use and why? I am not sure if I am covering all of the bases with that. \n\nWhat do I need to test the clean water from my RO/DI unit so I know it is working properly?\n\nAny help is greatly appreciated.