They have all plants submerged, a tank full of swords, assorted sword
plants. pots of variegated acrocus was submerged too. I figure leaves
for those should poke out of the water to breathe for the acrocus.

I also went to PETCO and bought their little tube packaged O. Japonica
Kyoto, I got home and found it was a land plant, it's going back
today.

They also sell the black mystery snails so I guess the snails eggs
might be that variety? Are little individual black dots on the plant
snail eggs?

I am running a 20 gal barrel outside, the snails probably won't bother
me if they chew on the plants a bit as I don't get a good view of my
plants most of the time. But I kind of want the type that would rather
eat debris and clean things up, thinking of getting a couple of their
black mystery snails what do you think?