To update you guys, i checked them again and they have both been swimming in laps around. They are quite cute little things
. I'm planning to buy some feeder goldfish (cuz they are cheaper) and put them in there. They'll be like extra decoration. And if my driftwood at the LFS is not too expensive (my LFS is way over priced) i might get some.
I'll keep looking for an article when i have some free time.