Water fleas, springtails or something else?

Hi guys
I've just finished cycling my new aquarium and am preparing to add fish by next week
Tonight looking at the tank I noticed some small critters along the glass down by the gravel
Please could you help me identify them
I'm sorry about the bad quality photos, they are extremely small and my camera isn't great

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Instead of trying to zoom in too close with your phone, try and take a clear picture, and then crop it in order to show the critters you need identification on.
Unfortunately the pics you posted are not very clear.

 

I am finding it hard to focus on them without zooming but this was the best I could do

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It could be fluff from a cloth used to clean the glass, or even juvenile Hydra, and just about anything in between.
The only clear thing for me is a juvenile Ramshorn snail.
Perhaps someone else has better eyesight.

 

There is fluff on the outside of the glass, and there are lots of Ramshorns as well
But what I'm referring to are these (circled in red)
They are swimming around very fast and stop to rest on the glass

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If it is swimming around very fast it won't be Hydra.
It could be water fleas or seed shrimp.

 

Its copepods.