I put some play sand in my tank today and really do not like it very much. I washed it forever and the tank still got cloudy. I'm about to head over to my local pool store to get some pool filter sand, do I have to take the play sand out or can I just throw the pool filter sand on top of it? There is not much play sand in there. The bottom of the tank has a very thin layer. It's a 125 gallon tank. I'm trying to get the tank cycled, should I take some water out to help get rid of the cloudiness or just leave it a lone. The cloudiness isn't horrible...