I used to get good skimate from my tunze DOC comline skimmer in my jbj 30 RL chamber.
It needed to be tuned but i was able to pull good dry skim from my AIO.
Afterwards in a smaller biocube i had better luck with nutrient control from a chaeto refugium in my first chamber.
It would grow so dense i would pull softball sizes of it out weekly
And that was only using a 6 watt white jbjnano glo