Cloudy Water

[plutoniumJoe]

We were hosting a Christmas get together last night, so of course I wanted my tank to be spic and span (who cares about the bathrooms). I scraped coaraline algae from the glass, full clean of the Protein Skimmer and a 15% water change. I changed my lighting schedule from 7am - 8pm to Noon to 10PM with MH on from 2-8pm on advice from LFS.

I woke up this morning and the water is cloudy. Ph 8.1, NH3/4 0.0, N02 0.0, salinity has crept up to 1027 with evaporation.

Any thoughts?