i have tons of diatoms too. Wel, i did, but i think all of their food is out of my tank now because i havent seen any build up on my new piece of live rock. Yeah, the cycling thing would make sence because mine jsut finished and im getting it now. Well, i jsut have a lot, all the live rock i have except 3 pieces of the new stuff i have is entirely brown on the top. Turbo snails you say? ill have to try that... Once the diatoms are gone, would they be ok? Would they need any algae in my tank to feed on? or d they get along good with extra piece of food? I did get a magfloat and am obsessed with makeing sure the sides of the tank are clean. Its realy fun! haha. Simple minds-simple pleasures.
I was actualy considering snails anyways because the 2 hermit crabs i have now, literaly never move from where they are,they will stay on one piece of live rock in basicaly the same spot forever, but they are still alive, go figure.
But i definaly agree about not scrubbing them off with an acrilic tank, Last year during bio class we had a whole section on diatoms and saw some live ones, and they are pretty sharp. Actualy, to prove my point, the whitening "crystals" in whitening tooth paste is actualy just diatom skeletons thats wear away your teeth to polish them.