[jnowell]

Hadn't thought about the smell yet Steve, thanks for bringing that to my attention before I plumbed it for air. I'm not all that worried about the ammonia and nitrites anyways (plenty of facilities on hand for dealing with those), so boosting the efficiency of the trickle isn't really nessecary.

I've always had problems with nitrates though, even in my display tank. Since my rearing tanks will likely have lots more bio load, and a lot less sand and LR, I'm a bit concerned about that aspect. I'll probably end up with a coil and DSB before it's all said and done. Nitrate removal requires an anoxic (or at least highly anaerobic) zone doesn't it? Sounded as if you might be saying the trickle wouild be for nitrate removal, want to make sure I'm not missing something.