Okay, after about 4-5 weeks of fishless cycling my tank reads 0 for nitrites FINALLY, after remaining at 0 for about a day (24hours) i did my big water change to remove the nitrates...after i got done refilling tank and adding WC along with the added water, i did another check on all my water parameters and Ammonia-0, Nitrates-0, pH- around 7.6 and my freakin Nitrites are OFF THE CHARTS!!! what the heck!!! i mean is this normal RIGHT after the tank has cycled and maybe testing as soon as i got done fillin didnt give the filters time to handle the nitrite or what? i really dont know bc i dont my Fishless cycle by the books but apparently i did something wrong...HELP ME!!!!