Diatom advice please.

[bluesox68]

So every once in a while I notice that I get brown diatom on the front of my 40g display and I hate it, lol. I have a lot of LR so I might have a few dead spots but I feel I would benefit from more sand sifting. I do have a yellow watchman goby and nassarius snails but the gobey doesn't sift much and I don't see the snails other than at feeding time. I would like to get another gobey that sifts sand better, but I know they're territorial. Anyone who has sandsifting options, they'd be greatly appreciated. I just realized that I mislabelled my post! Meant to say "sand sifting advice" LOL. Sorry!