Help ID something in my water?
Can anyone help ID this?
Everything was fine on Tuesday but on Wednesday my water started getting cloudy. By Wed night, it was horrible.
I was starting a water change and realized it is alive... whatever IT is.
I've been feeding vinegar eels to baby Corey. I also had pond snails come in on some plants.
It seems like way too much of whatever - so what do I do (beyond water changes)?
I couldn't upload the video so it is posted on YouTube:

What's on the blue portion near the end of the video seems to be water hydras, more specifically, starved hydras which have retracted due to a lack of available food, and likely end up dying and drifting off in the current. They can easily hitch a ride into your tank from being on a plant, but getting rid of them can be a pain if they manage to take root as an infestation.