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Those nitrates aren't super high. I know of people who have run reef tanks with nitrates in the 60's. While not ideal, it can be done. You'll get both sides on water changes during the cycle. I wouldn't, let the cycle fully complete. If nitrates jump into the 40's then do water changes. Also, if you are going to raise the salinity now is the time to do it. That way there won't be any corals in there if you are making swings.