Ok, I think I am safe as long as it doesn't bulldoze my rocks. Like I said I am stable, but I seen others posts where they put, for example, pvc piping under the rocks. Well I did what you did, so I again, feel better. Thank you. Gonna try and get my LFS to get one for me (got a little pull there), should I be concerned with other gobies that closely resemble the diamond watchman? I only say this b/c the owner (which knows nothing) ordered in a lawnmower blenny for me and not knowing any better I bought it (looked like one to me)
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long story short, it wasnt a LMB, looked like it though, and was heck on my reef, returned to LFS. Thanks again.