You want bubbles about 1/3 to 1/2 way up your flue, but not enough to overflow on a regular basis. Start at the lowest setting of flow, then every 2 days, crank it up a tad until, over a week, you end up with a dark colored stuff very smelly in your cup. It takes about 2-4 weeks of 24 hours skim to break in
Yup, yup, to the above, let's get the right height, but what makes you "feel" is not working?
Does it make bubbles and are they rising in the flue area?
When a skimmer is new and until it gets a coat on the walls it doesn't seem to do much at all, and in addition, we don't know the amount of organic a in your DT.
Get it set, let it be
You gotta let that slime coating build up on the inside of the skimmer. That is what "break-in" refers to. Takes about a month. But once that is done, you'll find that dark green stuff in you collection cup. It'll be light in the beginning, but after about 6 months, it'll smell strong enough to make you gag when you dump it out and clean the cup out.
Ummm...
I clean my skimmer cup weekly and clear out all the slime on the inside of the collection tube, as well as the outside of the tube and the inside and bottom of the collection cup. So it all goes back in nice and clean. Your comment above suggests I am doing the wrong thing.
Should I just pour out the skimmate and replace the skimmer cup as-is instead?
Ummm...
I clean my skimmer cup weekly and clear out all the slime on the inside of the collection tube, as well as the outside of the tube and the inside and bottom of the collection cup. So it all goes back in nice and clean. Your comment above suggests I am doing the wrong thing.
Should I just pour out the skimmate and replace the skimmer cup as-is instead?
I don't know how you got the idea that cleaning your skimmer cup is the wrong thing to do. The cup is the only part that you should be cleaning on a regular basis.