Randy My goal is to maintain 2 ppm nitrates So I started dosing 10ml the night before last night at the next morning the nitrates were at.25 but by the evening they were back at 0 so last night I dosed 20 ml and after 2 hours they measure at 1ppm so I dosed 20 more ml and after a few hours they measure 2 ppm and after checking it this morning and this evening they are still at 2ppm so what should I do now to maintain the 2ppm nitrates ? Thanks in advance Randy