hello i notice you do reef tanks and i am new to saltwater in general. i would greatly apriciate any input you can help me with. 30 gal, 20lbs live sand "the good stuff". 30lbs base rock "lace rock" its heavier than live rock. also 15 lbs live rock, one yellow tailed damsel, one six lined wrasse, one green hermit crab, one frogspawn coral, and random hitchhikers. question will the hermit hurt my coral the lfs said he was reef safe along with the wrasse. thanx 4 your time.