In my 150 i have; 1 10 inch snowflake
1 5 inch yellow tang
1 3 inch huma huma trigger
1 5 inch panther grouper
1 5 inch green bird wrasse
1 5 inch volitan lionfish
1 4 inch hifin snapper
1 3 inch blue velvet damel
1 2 inch domino damsel
1 4 inch porcupine puffer
1 3inch spotted goatfish
2 tiny hermits(come out at night)
they all get along fairly well though volitan gets nip here and there, i put them in building up my tank in order of least aggressive to most aggressive, i have a heavy fish load but will eventually get rid of hifin and grouper possibly porcupine when they get extremely large to cut down on my fish load, I have a 225 gallon wet dry and also a big hang on canister filter with addtional biological matrix stones, I have a 250 gallon skimmer in my sump and a uv sterilizer and a really good hydor heater, i also have 2 air pumps with air stiones on bopth end of my tank for additional water movement airation, I am thinking of getting a reverse osmosis unit to cut down on phosphates and other polltutants from tap to cut down on brown,black, red sludge algea as i wish to cultivate nice green algea colony for yellow tang, and even growe some in my sump which i have heard of, i lost a majetsic angel who was doing great but think got impaled by my lionfish, for some reason my lion didnt like here and was chasing her with his venomous spine, i found here decaying body under some live rock a few days later

also and building a self made back up power system, as now only have back up airation unti.i am also considering foing some live plants and reading up on it and somew advanced lighting , so i hoept his helps you 150 is a good size to start as i went from a 29 (now a quarartine tank str8 to 150!!!!