These things are MAGICAL.
So, if you stick them in distilled water, you get little creatures to inspect. That's cool, educational, etc. I'm all for that. However, let me tell you why you want to buy these:
These are THE KEY to clear water in a no-tech (no filter, specifically) aquarium.
Here's an approximate timeline:
Day 1) Here we go!
Day 2) No change.
Day 3) No change.
...
Day 6) I guess that's a /little/ better. I guess.
Day 7) Eh, ok, so I wasn't imagining it. It's a tiny bit better. I can see them moving around near the glass.
Day 8) No change.
...
Day 14) Well, I guess that's not getting any better than that. Better find an algae removal chemical that won't kill my snail.
Day 15) HOLY COW I CAN SEE EVERYTHING!!!!!! I didn't even get to buy a chemical treatment.
It's been a month and a half and I've had no clarity issues at all. I didn't even bother with the hatching instructions, just dumped them into my 1gal tank.
If you want a little desk aquarium, get yourself some plants, get yourself some snails and/or shrimp, and BUY THESE. BUY THEM NOW. :)
Verified purchase: Yes