so would you just buy the microbacter7 and add that to the existing tank? or would I need to start over and add new salt water?Yeah that is surprising, I would have thought there would have been some change by now. I just checked my own timeline, and yeah, within 4 days there was definite change. I used Microbacter7. Maybe it is a good idea then to swap over.
Re: API test kits, their issue is that they are not accurate, though they are precise. At least that is my experience, doing multiple repeated tests at once.