Wild scuds = good?

[abc]

and by the way, I did a little experiment with the scuds.

I had both a new nerite and a large pond snail in the same tank.

the scuds left the pond snail alone and it thrived

my nerite snail was active at first, then retreated into its shell. I thought it was resting and left it alone for 1 week. when I checked to see it, no snail. only a massive colony of scuds fleeing out of its shell like the mechanical octopi that invaded Zion in the Matrix movie. The shell was empty/hallow inside with the nerite snail eaten to the last piece of flesh...

and of the course, the pond snail was zipping all over my tank without a care in the world...