Ok, I have been going to preuss for a while now and noticed that the sand in there sps dominated display tank was extremely white and I asked how they keep it so white and they showed me the diamond spotted sand sifting goby, well I noticed there tank having large amounts of flow and it seemed the goby wasn't doing any harm well I decided to purchase a much smaller one and throw it in my 120 with aragonite sand, he immediatly started sifting and I thought everything was cool until I came back about 2 hours later and it looked like a sand storm in my tank, it has been like this since the day I bought him, basically I was wondering if it looks that way because of his initial sifting and my sand is in fact dirty and thats whats floating and it won't last very long or is it going to look like a constant sand storm in my tank?