I have no idea what to do anymore...ammonia is irritating me

So I found out what caused ammonia before...my mixing bucket. I buy a new mixing bucket. No more ammonia pre-mixing salt. Post salt mixing = somewhere between 0-0.25 ammonia. I used a brand new pump that I have only used to mix salt with. This thing is seriously annoying!!! What is going on!? I should not be having ammonia in my tank after 6 weeks running!!! nitrite and Nitrate are at 0! and have been since always.