Can somebody tell me what kind of food is best for a brittle star?.Also,i'm adding calcium,iodine,strontium and manganese.My intention is to start adding some corrals in the future.Is this a good idea? All i have is 30g tank,wet/dry with 8g sump,protein skimmer,live rock,live sand,a small cleanning crue (5 snails,5 blue leg hermit and a star fish).I will add a hang on refugium 18". Also have one false percula (nemo) and one bangaii cardinal. amonia 0 trites 0 trates 5 ph 8.4 specific gravity 1.026 using refractometer. water temp between 80 and 82 deg. :notsure: The tank has been running for 4 months. Any advise will be greatly appreciated.I'm new to this hobbie,lot of readding is all i got so far.