fragit, because this is a NPS we've to feed it with proper food and always checking the nitrates and phosphates so that we don't have bad surprises. I had several off these kinds of corals before but I had to disable the system do to house move, but now the reef is stabilized and I can start to introduce the corals again. At the moment I have this one, 1 Chili Coral (very small), 1 black tubastrea and 1 big head dendro.
This is an interesting idea, have you had any macros showing up in you DT? Wouldn’t this cause it to spread to unwanted areas? Are you using a cheese cloth to strain?