so i tested my water parm. two days after i set up my tank. it can up 0 on everything....checked it today almost 6 days later and 0 on everything again. now i dont think its cycled because i would think i would have some nitrates so how long for it to start? its a 20long, about 26lbs live sand and 17lbs live rock. also checked my test kit against another and same results. thanks