Coincidence or luck?

[SkullAngel]

Okay so I had this container which before I used to hatch brine shrimp. Two days ago I decided to restart my brine shrimp breeding project. I used a different container to to hatch them this time. However, the container I used before had some eggs stuck to the bottom that I didn't notice before. I used that to grow some kind of algae for the brine shrimp. All I did to that container was add tap water, freshwater from the faucet(I did not use any water conditioner). Then placed an air tube in it and a light. Algae was growing like I planned, but I noticed brine shrimp eggs in the algae. Yesterday I noticed something swimming in it. And it looked to me like brine shrimp. How can they hatch in unconditioned fresh tap water?!?!?
All the eggs where from the same tube I bought a long time ago

 

[Andrew McFadden]

Id have to go with luck. You wouldnt happend to have well water do you?

 

[SkullAngel]

I got it straight from the sink and I live in an apartment so....not sure

 

[SkullAngel]

And the only thing I added was the tap water, I swished my magnet cleaner to put in some algae and these rocks I got at the beach a couple months before that I thoroughly washed cuz I used some to decorate my freshwater tank. Could it be the rocks?

Video

 

[SkullAngel]

Just checked them again and still alive

 

[SkullAngel]

So I set another container up last night the same way and brine shrimp hatched