Snrub,
The grass shrimp can and will stay hiden if they share the pond with predators(ie; RES). While grass is best, rocks will work also. Some uniodized salt and seashells (calcium) help as well.

Thought the shrimp and crawfish didn't survive in my 150gal rubber maid. Occassionally I'd find a pincher or tail shell. My big RES was spending hours cruising his tank nose down, while eating less and less of the delicasies tossed to him. When it came time to free him and clean the tank there were 200 - 300 grass shrimp and 100 - 200 crawfish, that I didn't know existed, hidden under 3 gallons of 3" rocks!! The water was 20" deep, clear, and I spent loads of time daily feeding, cleaning, rearranging, or just plain viewing the big boy in his tank. Don't be surprised if your shrimp are there, just hiding.

So, update us. The shrimp appear few, but are there. What about the other creatures in the pond?

Last edited by SoSauty; 09/01/14 03:00 PM.

Self-educated rednecks, the real intelligentsia.