Do you have lots of light shining on your tank? Either sunlight or room lamps or a light in the tank? That will encouage the "wrong" things to grow and make the water turn color, though usually that is the green stuff.

Are there fish in the tank now or not?

What size is the tank and what size filter are you using?

Testing th PH, ammonia and nitrites should help identify the issue. Good luck and keep us posted.
Sandra