I have one with a Sicce pump and is it is terrible in lower water levels. If you have any input about the DC after using it for a while, then please let me know. ...now, back to the topic.
Your numbers are looking pretty good. I am glad that they are not going up, at least. In a few more weeks, or another month, you should see them go down as the bacteria grows in more and you fire up that beasty. If you still want to stop by if you are ever up north, I can go through my whole monologue about how to keep them low and show you what I do.