and you guys would know this best, as i have downloaded the manual to my tank, it says if i am doing a reef setup, i dont have to cermic rings bag and the bio balls , "maintaining an average of 1lb of lr will create a live bio filter system as well as denitrification system ultimatly creating a balanced biotpe" so basicaly just run the sponges and a sack of crushed live rock in the back ? and then the pump back to my tank and thats it?