Sugar Sized Sand to . . . What? Sand Storm Happening .. Need some help

[NastayNatron]

I have had my 125g sps reef set up for about 8 months now. I have two Vortech MP40s running in reef crest at 100%. At first all was fine. Until I got a Diamond Head Goby. I do love to watch the goby and he now has my once brown sand bed shiny white. I also have a leopard wrasse in my tank and love the look of sand so going bare bottom is not an option.

Has anyone ever switched there sand bed? It is a shallow sand bed about 2" deep with sugar sized Caribsea Sand. I was thinking I could suck about half of the sand bed out with a gravel syphon. Give the tank about a week or so just incase it needs to re-populate some bacteria and then go for round two and syphon out the other half. As soon as the second half is removed I would immediately add about 1/3 of the new substrate so the wrasse and goby have something to hang out in. A week later I would add another third and finally one week later, the final third.

I was thinking about putting Caribsea Seafloor Special Grade substrate in. Is anyone using this in high flow SPS tanks? It must not blow around even with the constant sifting by my goby. It also must be fine for wrasse's and also my sand sifter! Am I on the right track here? Is this the proper sand?

All in all it would be about a 4 week process which would hopefully save me from blowing sand off ALL my corals every morning. Looking forward to your opinions/experiences!

Nate