Aren't you supposed to skim after the Chaetomorpha has had a chance to remove nutrients from the water? Maybe it doesn't matter and I'm not sure how much phosphate/nitrate gets removed in the skimming process, but I seem to recall reading that somewhere.
I do like your setup. What kind of light are you running for the Chaeto?
I do like your setup. What kind of light are you running for the Chaeto?



