So I posted on here a few days ago about testing water... I had used API test kit and I got readings of about 8.1 PH, ammonia somewhere between .25 and 0, 0 nitrites and 0 nitrates... I have been cycling for a week now but the only thing I am using is live sand and cured live rock... And that's it.... I got these results after doing a 10 gallon water change but before the change I got the same results... The LFS however says I have high ammonia and nitrates ( b4 water Change)....I'm pretty sure they use either a tetra or instant ocean tests kits cuz they only have those in their shop.... Can anyone shed light on the situation