Water Tests Results

The results came back from the samples I sent to the lab at AquariumWaterTesting.com.  Everything looks good except for the Silica and Copper of which I have no idea where it (Cu) is coming from.  I wasn't planning to use activated carbon but did add a bag to the overflow along with Blackwell Aquatics (Phos Extrax).  Hoping this will gobble up the Copper and reduce the Silica.  To this point nothing has been dosed into the aquarium so the results are solely based on the salt mix blend I have been using (Instant Ocean Reef Crystals).