With any fish tank, it all starts with the water quality. Can you use city
water? No, I wouldn't use it. Too many chenicals that you dont want will be
in your tank, chemicals that are counter productive to what you want to
achieve. RODI is the BEST way to go, they are not too expensive, can find
them in your local LFS or eBay. Bottled water from your local LFS, is
another way to go. Stay away from using Tap, too many problems come from the
tap.
Good Luck
wrote in message
ups.com...
Hello and thanks up front for all your facts on reef systems! I'm
starting to set up a new reef tank, 40g. I plan to have 20lbs live sand
and 20 lbs CarbeSea Florida Crushed Coral. I have a 10g wet/dry with my
homemade skimmer.

I have only water in the sytem now, testing and getting familiar
with the sump and how it all works. I have been spending about 8 hrs a
day reading here and other reef forums I have found on the internet-
there is so much to absorb!

My really important question is can I use my city water after its
been circulating for awhile? I mean I have not finished all my research
yet, books and internet, and plan on another 2 months of reading...

What I really want for my tank is the small creatures from the
live sand from the Florida keys. Should I also add the stuff "GARF
Grundge"?

Any input is greatly appreciated!!!!

PS: my LFS has the live sand also, should I get it there? I'm
Jacksonville FL