I wouldn't add any of those "additives" unless you absolutely need to. Success in a marine tank it centered around how close you are able to recreate the natural ocean environment. I wouldn't worry to much about it. When you get your sand and LR
in there and the tank has cycled, it should clear up. BTW
, are you using RO DI
water or just tap water? Using RO
water will be much more beneficial for your tank.
Your source water may the solution to the milky water. HTH
! and good luck.