At POTO, we only test alk and po4 regularly, and we plot the values on a line chart to give us a big picture about the systems:
Here's a closer look at each contestant's parameters from historic trends for the last 4 months.
And here's a look at the parameters from last year to now:
First thing you will notice is that there are lots of swings. Some of the spikes correlate with a large sale such as a live sale, or selling off colonies. This gives us a birds-eye view of the tanks and what event might have triggered any large swings. We test alk from 2x a week to sometimes daily. So we are used to seeing swings. But we have to keep in mind that these data are for a long period of time. But overall the trend is a flat line.
Here's a closer look at each contestant's parameters from historic trends for the last 4 months.
And here's a look at the parameters from last year to now:
First thing you will notice is that there are lots of swings. Some of the spikes correlate with a large sale such as a live sale, or selling off colonies. This gives us a birds-eye view of the tanks and what event might have triggered any large swings. We test alk from 2x a week to sometimes daily. So we are used to seeing swings. But we have to keep in mind that these data are for a long period of time. But overall the trend is a flat line.