ULNS - Denitrators

[b09u5]

How does the size of my filtration system control Nitrates? Aren't nitrates the end of the nitrogen cycle? I understand how LR can control nitrites, by converting them to nitrates, but from there I am lost.

[Reefer Rob]

Nitrates are consumed by the anaerobic bacteria in the low oxygen area inside the rock.

[b09u5]

Really? That's a great suggestion. It must operate similar to a deep sand bed. I bet you need a ton of live rock and very little flow to make that happen. It sounds like its not something for a display... I think I have seen that setup at Wai's in Calgary. He has a SH Ton of LR in a ~300Gallon with very little flow.

Has anyone had success maintaining 0.1ppm Nitrates with 10-15% water changes weekly with a setup like this?

I doubt I have enough space to setup another aquarium for LR for my 700gallon total volume system. Unless this doesn't take as much real estate as I am thinking.

Thanks again for the info.