What exactly are you dosing? You definitely don't want your nitrate to be at zero, but that is true for any of the ferts, so yes, up your nitrate dosage. Also, very important, If you do not shake the number 2 bottle of the nitrate test kit vigorously for 1 minute, like the instructions say, you will get a 0 ppm reading no matter what is in the tank.
Standard 10 Gallon (20 x12x12).
Low tech, Sand substrate.
Eheim 2211, and Aqueon Quietflow 10.
Finnex Stingray LED, 20" above substrate
2 Anubias Nana Petite, Christmas moss.
4 Halequin Rasborahs, 5 RCS.