I have a 55g drilled tank. I set it all up. I added the sand and the water. The water is very cloudy and milkey. I put plates down in the tank. So the water wouldnt move all the sand around. I have my sump running with a a cheap hang on the back filter with the sponge in it. To see if I can clear up the cloudiness. Any Ideas how long will this last. Its been a few days. And It still looks the same. I even shut my sump off. No luck. Please help