I have dosed no3, that why the jagged line in the graph. That was on a doser.Very interesting, would you consider that due to you high coral volume that your coral is consuming no3 faster then it’s being added to the tank? or was the tank always running like this? Would you ever consider dosing no3 and see if you get positive results?
Most likely the coral volume, I agree. I have upped my food intake for the system and added a few more fish.