hi guys i have read so much my head hurts lol, just wondering when my
powerhead Hydor Koralia 2 Marine Aquarium Reef power head 2300lph/600
GPH come's whats the best place for it and is that all i need?, also how much salt do i put in a 120ltr/ 30gal tank with about 50kg of
live rock, and when i do top offs how do i do it? add salt water or just tap water witch has been treated. i got my
refractometer now thanks ebay lol,
skimmer, digital
pH tester,
nitrate and
nitrite,
ammonia test kits normal lighting + t5 lighting, heater, exterrnal canister,CARIBSEA ARAG
live sand 20LBS, is that all i need

do i need a UV light any? recommendations??