I'll definitely look into Dr Tim's waste away. To my understanding this is bacterial. And much more keen on the idea of using that rather than chemicals. I'll certainly be trying to stay on top of the phosphates. I'm hoping the refugium helps to take care of a large part of that. I can't remember why I want to keep the nitrates above zero though. Does this have something to do with bacterial populations out competing the cyano?
I definitely should have added earlier that I use a three-stage RODI.
Thanks! It took me well over 24 hours of solid work spread out over the period of two weeks to construct this reefscape.
The nitrate thing is because cyano gets their nitrogen via the atmosphere. Everything alive needs some amount if nitrogen, and 0 nitrates will cause issues with your microbial community and what not (as well as corals and such). 0 nitrate and at least some phosphates sets up a perfect environment for cyano as their competition can't take off.
But other than that, I wouldn't worry too much about seeing a spot of cyano or what not at first as very rarely do new tanks not have at least one type of algae or bacteria try to get their footing in.