New 46 Gallon bow reef

[Aquaria]

ok well its been a little while since my last post, so here goes. i fixed the brace got the sand and cured rock in, then the clean up crew 2 emerald crabs, (i dont like em so far they have killed a peppermint shrimp keep going at my other one. might be giving away in edmonton if anyone is interested.) 1 peppermint shimp, 3 narcceses snails (mind spelling :P) 2 cerith, i think (cone shell) 2 turbos spiral into a point type shell. (i dident know at first so i might get rid of em if they get bigger) 4 small hermit crabs one is orange with a larage purple claw. after 2 weeks, about dec 27 i put in 2 juv clowns.
i went for a inlaw visit and came back to my diatom outbreak as i was reading all new tanks go through.
now will it go away on its own or do i need to do some sort of work, snails and hermits happily eating away at it. also im planning a 20% water change 2 days from now, as i need water from safeway. want to stop using tapwater, and now that the tank is full i can make one trip at a time lol.
. P.S pics coming soon as i need to borrow my dads camera, need to buy my own :P.