EEEW! Bugs on surface of water!

Harmless springtails a.k.a. collembola. Draw a paper towel across the surface, lifting up the front edges as you go, and you'll decimate them.

Try www.google.com in the image mode (IMG tab): "collembola"

Yours are probably Podura aquatica.

How can you want to get rid of a creature before you know what it is? Get a magnifier and peer at the community among the gravel grains against the glass! It's a whole world in there.

you had a sea monkey farm as a kid didnt you wetman
Or maybe a ant farm?

I wasn't that much of a hands-on kid. I didn't have a microscope til I was over fifty. I was always intrigued by the way this summer's thrown-out vegetables were black compost by next summer. And we were hatching brine shrimp, I think, for the Dwarf Gourami fry (none made it) when I was ten or eleven. I caught some butterflies for a year or two, but I never learned anything about them-- oddly, because I was generally so geekatoid.

I have always wanted an ant farm: hung on the wall in a nice picture frame, with a cloth to keep it dark til you want to look. Maybe it's not too late...