My nitrates where up to 20ppm so I started dosing 15ml of NO3-PO4-X to my 120g tank every day for 1 week, then tested and noticed that I needed to up the dose by 5ml, so 20ml every day for the next week and walla! Nitrates are undetectable, I love this product. It is a safe way to carbon dosing! Here's a pic
Last edited: