I dont know what these are

[Niño]

Within the past week 2 of my red hornet frags and just this morning my 2 polyp blue hornet just vanished. They were all there the night before and when I wake up. poof they're gone. I dont know what could be eating it or why theyre gone so fast. None of my other zoas seem to just "melt" away or vanish. I do have an emerald crab, some red and blue hermit crabs and some other CUC. I took a pic of some of these bug looking things that always stay at the top of my glass, sorry for the lousy pic. Could they be the cause of what is going on?

 

[thewackyreefer]

Too hard to tell based on the pics. All I really see are the microbubbles.

 

[Tabasco1]

+1, is there any way you could post up a better picture. It is really hard to tell anything by that post.

 

[fsu1dolfan]

Kind if hard to tell what we are looking for. Do you see any of them on your frags or other corals??

 

[Aquaph8]

Can you list your fish and inverts? Ive lost zoa's to asternia's, fish, and crabs but they dont usually just dissapear completely. They usually shrink up for a few days first. I did have a cowrie that would just mow them over and leave no trace by the next morning.

 

[Niño]

Sorry guys I dont have a macro lens to take a really up close pics of these "bugs". The only fish I have in my tank are kohl tang and flasher wrasse, I have an emerald crab and some red and blue hermit crabs, and a few CUC snails.

 

[xmetalfan99]

My guess is a mixture of microbubbles and copepods. A friend of mine has a tank filled with pods that are always in the water column. Its cool watching his gorgs devour the pods. If they are pods, they are good to have and beneficial to the tank.

 

[Niño]

So I guess what I have are copepods, didnt realize it, but I found a youtube video that resembles what goes on in my tank.

YouTube - Congregating copepods