Just set up a 90g. Using TMG. Tap has no Nitrates and .5 to 1.0 Phosphate. Does anyone suggest adding Nitrate. I have Kent's product called Pro-Plant which contains Sodium Nitrate and Magnesium Sulfate. Bottle says 1 percent total nitrogen. Tank has only been up with plants and 4 sailfin black mollies for 5 days. Thanks for everybody's help so far from the list. Mark