From the SPS section of my frag system is where they did best. My system regularly produced live mysis shrimp, and plenty of clean up crew that would spawn on a regular basis. Red Banded Trochus can really get a spawn party started, the mini brittle stars come out of hiding and raise their bodies to cast their little puff of spawn and water can get pretty cloudy. Meanwhile everyone who filter feeds is having a dramatic feeding response. A reef system shouldn’t support just keeping things alive, but an entire food web with livestock attempting to reproduce themselves regularly. If you’ve never seen Tangs or Flasher Wrasse do their spawning in the evening, it’s a beautiful, twisting, flash of lightning and color.