Finally got my pH and salinity where I want it (8.1 and 1.024) and I wanna get some stuff today. 3 week old tank, all ammonia nitrates and trites are 0. I'm thinking of adding a couple more Nass snails, and a harlequin serpent star, and maybe something else like a conch or small urchin? This is goin to be used for corals in the future, what cool inverts do you recommend for this 29 gal tank?