um...okay. so, this threw me for a loop today. i use the api master kit at home. my levels haven't changed much since i bought the tank 4 weeks ago. today's levels are: ammonia 0.25 nitrites 0 nitrates 5-10 ph 7.6 where they haven't changed much, i thought, hmm, i'll try to find a fish store that uses a different kit, for comparison sake. they did a water test for me using nutrafin master kit. results were very different. ammonia 0.6 nitrites 0.3 nitrates 5 ph 7 ...i'm not really sure what to think? she told me that based on those values that my tank is "absolutely unsafe" for fish, which is understandable, but it's quite a difference from what api is telling me. anyone have any experience with the nutrafin master kit?