ok so my 55 gal saltwater tank is getting over populated fish are getting to big panther grouper,lion,snowflake eal,lyretail wrasse.looking to upgrade to 120 deep blue reef ready tank.curently running wet dry filter with 500 mag pump dont know brand but measures 30x9x15 would guess 20 gallon. will this work? .what size pump should i run on the 120 was thinking a 750 or 900 mag.also i would need a protein skimmer to many out there need help.have pix of filter will be taking out bio balls and adding more LR in sump.should i replace live sand or reuse and add more?also have 8watt uv should i use it also if i
missed anything please explain
missed anything please explain

