Hello all I have been cycling my tank for about 4 Weeks now and am starting to see the algae take off on my live rock....I would like to add some cleaners but not sure based off my chemistry it’s quite ready....I am using the API test kit and if I just use my tubes vs test card which lowest numbers are 0.25 they look good to go, however I usually go on and mix a control sample with some Salt RODI I have from LFS and I can see a slight difference esp in nitrites.....but against card you’d prob call it 0......any suggestions on making a determination?