I just set up my new 125 gallon tank and I am using RO/DI water (I thought it would work fine because I use it for top offs in my reef tank). I also does ammonia once and the ppm is at a solid 3-4 and its been that way for about five days. I added Fritz Turbostart 700 4 days ago to hopefully cycle my tank quicker. However, I haven't noticed any difference in Nitrites or ammonia since adding the Turbostart. I am getting worried that RO/DI water is stopping my tank from cycling. I need some opinions on this. Should I take out most of my water and replace it with treated tap water or should I just leave it and let it do its thing? Should I add some sort of minerals to the RO/DI water that would usually be in tap water? If someone could help me out on this one, that would be great.