I added 0-10-10 formula, transfer separation, and received some worms

Anyone know what these water worms are? I ordered from two suppliers originally, and the new bag just came, I separated it into it's own contained tray. I used my turkey baster to suck them out and flushed them down the toilet.

The fresh tub is going to be the slow migration of pure azolla picked from the original tub. The duckweed will later be separated as well. I want to have one tub of azolla, one tub of duckweed. The liquid koolbloom should prevent the pink ends on the azolla. The original tub is clearly at a point of stability and growth just over a week later.