So I just set up my first 55 gal tank (the sheer volume of water in my home is slightly intimidating). Well I decided I wanted to do a sand substrate but now the water is slightly milky. I rinsed the sand over and over and over before I added and didn't add it to the tank until the water would be clear in the bucket almost immediately after stirring up the sand. Did I still not rinse it enough? Could it be something else? I have the canister filter going and hopefully that will clear it up but would appreciate suggestions.