Yeah that particular ob is my all time fave. And I personally don't mind others asking questions on my threads but I know some people frown upon it. To answer your question my water was cloudy even after rinsing the sand for prolly over 5 hours. I ran my filter and added seachem clarity and it cleared up within a few hours, Then put in a new filter cartridge. I just used play sand for my tank. Not sure if higher quality sand has the cloudiness issue to the same degree or not.