Zoas with undetectable nitrates and phosphates?

[SteveConn]

I use buffered vitamin c (sodium ascorbate) no fast pH drop

As for the zoas, looking at the time lapse, I think they are getting annoyed by all critter traffic (spaghetti worms, vermatis, asternia stars, colonists snails, small bristle worms.....

I'll dip them in RODI pH adjusted then tank water with iodine, but Im at a loss as to how to decrease the fauna in my tank.. Or is that the issue?

I love zoas and want to grow my collection, but SPS seem easier! Is that weird?