zoas growth

So I have been keeping a reef aquarium for quite some time now and want to take things to the next level. I've always just winged It lol I guess I'm a rebel.everything has always done okay ( I can grow euphyllia like a champ lol) but I got my first test kits today (salifert) and have tested...

How valuable are these Rasta zoas? https://share.icloud.com/photos/086XzLeHCWn5Sb31UUTdTgvZw

I saw..... what I believe..... was a feeding response to certain Zoas when I turned off all flow and let oyster juice slowing trickle down (fallout). I DID NOT squirt juice on the Zoas directly but created a cloud of juice a few inches above the Zoas colony and let the juice trickle down...