is Protein skimmer doing its job??

[Da sundance kid]

I just set up a 76gal tank oceanic bowfront about three weeks ago and most of my live rock and live sand and sail fin tang came from my 50 gal which had a back pack protein skimmer. My new set up has a a sump and a bigger protein skimmer which is inside the sump, I noticed the protein skimmer (although working) is not creating the foam that the back pack used to create. Is this normal due to the fact that is a new set up and about 60% percent of the water is new. I have no corrals not yet! Still waiting , 1 sail fin tang and six damselfish been in there for about a week they look happy and healthy but I'm concerned that my protein skimmer might not be doing it's job. Parameters are nitrites 0, nitrates 40 ppm. Ph 8.0 Please advise

 

[hackteck]

If the skimmer was new it takes a while for them to break in

 

[Smitty]

+1 It does take some time for a new skimmer to break in. You may also want to check that it is at the correct height in the water as that will make a difference too.

 

[Da sundance kid]

That was it thanx