Are these hybrids or other?

[Lowstorm]

So I have a ton of these guys on the glass. Probably the rock too. Pics were hard to take because its all so small to be almost impossible, so this is as best as I could get. I'm pretty sure they're hydroids, but the reddish orange foot throws me off.
Foot through glass

top of another. Looks like a white anemone kinda. But they're tiny. Half the end of a pencil eraser around, sticking out into the water half that much. The big white dots are them. Small dots are pods.

Another top shot

And the feet of a few

They're so small... did I mention my camera wanted to focus on pods instead? I'm sure they're eating my tiny pods

 

[SandJ]

It may be aiptasia.

My tank had some rather large aiptasia when I bought it. I treated them with Aiptasia X, and during treatment they would eject long white strings (assuming they were reproducing). Within a week I would find VERY tiny aiptasia floating in the tank or stuck to rocks (or the glass). I have pictures and videos somewhere.

I would net any floating out. If they were on the glass I would carefully scrape them off. I treated the ones on the rocks with Aiptasia X.

Over a couple months, there were less and less of them. The large ones came back a few times but eventually went away. I still have a few small ones but they do not seem to be multiplying and there are no new ones popping up.

 

[Lowstorm]

Not shaped correctly and the foot is definitely orange. The only clear/white parts are the tentacles.

 

[Lowstorm]

But now I'm leaning towards ball anemones. I'll let one get bigger to see I suppose. They're SO small. Nothing on the rocks yet either. I'll look for your video though! @SandJ