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I would reconsider using an UGF
for saltwater. It is pretty out-dated equaipment.
you just do not need it.
I already bought live sand and crushed coral.
I would suggest going with just sand as a substrate and leave out the CC
. The san is smaller and it will just settle to the bottom of the tank lwaving the CC
on top. Without regualr cleaning the CC
can trap detritus and cause NO3
to climb. LS
is a lot easer to take care of.
when do i introduce the rocks?
You can introduce them in the beging to kick off the cycle if you want.
Do i need a protein skimmer?
No you do need one, but I recommend it. It will only help with water quality.
You should also consider picking up a book on SW
tanks. I like "The Conscientious Marine Aquarist" by Robert Fenner.