Cycling question?

True....until the cycle is complete,there is no nutrients to pull from the water.
When ammonia and nitrite reaches zero or when nitrates show up in a test kit,that would be good time to crank the skimmer on.
 
I personally used the cycling of my tank to break in my skimmer.I started running it as soon as I added my LR.
 
Skimmer not needed until something live is added to the system such as live rock, fish, or cleanup crew. hope this helps.
 
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