[Blueface]

Originally Posted by BC-Axeman

Deep in the live rock and the live sand probably does the job in my tank, based on your information.

Absolutely!!!
That is why a reef is so self contained. Those nooks and crannies in that rock are natural denitrators. I would only use one like I did in fish only systems that don't have that natural effect you do.

I stopped measuring when I stopped getting readings. I still check calcium levels, though less often, to make sure my calcium reactor is dialed in.

Absolutely. Great regimen.

I have a downdraft skimmer about twice the size of the one in your picture. I wish I could hide it somewhere.

I have an ETSS twin tower on my system but I built the stand very high enough to fit it in there.
The bigger the skimmer, the better!!!

It's far to clean under that tank in your picture. I have dust, salt creep, tools, fish bags...

In time, mine did too.

In bold.