I am looking to get something to help keep my sand looking a little better. I have had a Diamond Goby twice before one jumped out the other went when my tank took a dive. That said they seemed to do a very good job keeping my sand clean and looking good. Seems its a fine line between keeping water flow near the sand and a sand storm. There are a few 'trouble' spots in my tank and in the past the Gobys seemed to do a good job. Any thoughts? Anything else out there?