I wouldn't dose anything. Let the tank get settled in. With weekly water changes your tank will stabilize and nitrates will come down. Also, I run the same skimmer on my 75 gallon reef and it works great for me. It took a few months of good husbandry and patience to get my params stable and my red sea kit doesnt pick up any nitrates. Every few weeks they would come down more and more. I added microbelift bacteria now and then but that's it. Dont rush out and buy a new skimmer due to others prefrences. Nothing in this hobby happens overnight and if it does its never good.