The long and the short of it is if you have zero NH4, adding more rock to your sump will not improve your biological capacity. The rest of it was just a roundabout way or proving that bacterial populations have a limiting factor.

First part of my statement was just saying I didn't completely understand Albert's explanation and how it tied in to the original question of relocating the rock to the sump that is currently in my DT.

I think the point is that no, there is no advantage, and in fact could be detrimental to add the rock to your sump. You likely won't need it (assuming you add the 100ish pounds to the DT) and it could collect detritus, causing nutrient buildup.

Check out this thread on rc, pretty cool

for aquascaping ideas...

Well that looks better than a pile of rocks! Thanks for posting!

Well that kinda sucks! I know with less rock in the tank it would make scaping a lot easier but I don't think I'd want to get rid of any either. Will work with what I've got.

Cyano looks like its clearing up! Might be able to do this tomorrow instead of Sunday!:lol:

You know, some of the best rockwork I've ever seen is right in Calgary. Check out Fooser's tank:

http://www.canreef.com/vbulletin/showthread.php?t=77349

Here's a video I made the last time I was over at his place:

http://i1112.photobucket.com/albums/...thonysTank.jpg

Zap straps and epoxy all the way!!!!

I was qualifying why adding rock to your sump is a worthless pursuit when it comes to bacteria, using bioballs as an example of resource limitation and its effect on the ecological balance of your system.

Not just that, it is a detriment for completely different reasons (detritus build up).

wow, that's awesome!

do you have pics of it recently?

Thank you! I appreciate the feedback and advice!

Going to find some inspiration now!