Hey Shane , quick question I had gotten the Red Sea pro test kit for nitrate, I followed the directions to a t and it shows my nitrates are undetectable, the test vial is just as clear as the saltwater control lol. The video on the computer has different reagents because the video was old. Is there anything with the test kit that the directions may not explain? It’s hard to believe a biocube with no skimmer can have not a trace of nitrates but this may be what is hindering my PE on acros other then my tenuis. Sorry for the lengthy question.