I am not "new" to the hobby, but have just started up my second tank. The first was a 210 gallon reef tank that I was a little too aggressive with the razor and busted the seam....making my living room look like the Mirage water fountain in Vegas. Nonetheless, I'm at it again. MY QUESTION: I just brought home two "sand sifter" shrimp. Does anyone have any info on them? There BIG and so far fairly docile, but I'm looking for specifics...any info would be greatly appreciated. Thanks