Help, strange clear stuff growing on tank glass

[InfiniteSoFi]

at a distance they look like dirt spots or algae but with a magnifying glass they look like tiny clear dandelion seeds.
heres a video of what they look like(not my video)

[YT]http://youtu.be/al_pUDrCS6M[/YT]

 

[InfiniteSoFi]

http://youtu.be/al_pUDrCS6M