Sulfur denitrator experiment

[Delphinus]

That's a cool idea! I can see that working well for a Ca reactor. Unfortunately that flowrate is far too fast for cycling this thing, since what we need is an oxygen-free zone to kickstart the anaerobic bacteria, so have to really restrict the amount of oxygen being introduced. I almost wonder if it's better to close the input altogether and open it slightly only once per day just to get the cycle going. Once the bacteria is settled I should be able to open up the flowrate, after all 1% volume turnover per day is not going to touch the tank's nitrates in any scenario.