Fellow reefers with colonial hybrids

[Backreefing]

Fellow reefers that like me have glorious populations of hybrids. I’m wondering do you have a deep sand or gravel bed as I do ? I’m beginning to suspect this is a source of food for them . Because it can produce tiny particles of food for them to catch. Here’s a picture of them .

 

[Nano sapiens]

'Colonial hydroids', I assume. You certainly have the Mother Load there! Have never run a DSB, but I'd suspect that they are feeding on something like spawn or larvae. Do you have a large population of worms or amphipods?

I have found that overfeeding the aquarium in a newer system will also encourage them to spread, but in very mature systems with plenty of other hungry mouths to feed they tend to stabilize their numbers at far lower levels.

 

[Backreefing]

I don’t see much of the worms and amphipods . But I do have tens if not hundreds of thousands of colonial hybrids. I’m also getting a lot of white sponges. I don’t feed to much. 17 fish mostly cromis and demsels. Anything gets snapped right up . If I fish dies sometimes I never see the body .
im thinking of changing the deep sand bed for a 1 1/4” layer of sand .