Water changes won't help the cloudiness. When it happened to me, I did a 50% water change and it helped for a few hours and then it was cloudy again. As hard as it is, just leave it alone and it will clear up in a few days.

And I concur about banning Oceanic and using RO/DI. Don't worry about how much nutrients are in your water right now. If anything, you don't want any because you don't have any corals in your tank to consume the nutrients. Tap water is loaded with phosphates, chlorine, flouride, and other things that dechlorinator won't take out. Trust me. I had a 29g, 40g hex, and a 58g all using tap water and they all had hair algae. Strangely enough, I also used Oceanic back then. I only use Reef Crystals now.