"The large majority of denitrating bacteria reside in your live rock and substrate (or filter media if you use it"
I agree with that.
So a 10% water change IS aggressive. I have been doing 30g water changes in a 180g aquariums with about an additional 40g in the sumps to reduce nitrates and they are coming down.
I agree with that.
So a 10% water change IS aggressive. I have been doing 30g water changes in a 180g aquariums with about an additional 40g in the sumps to reduce nitrates and they are coming down.