I have a 10g tank with cleaner shrimp, peppermint shrimp, two blue leg hermits, an emerald crab, and three astrea snails. I am getting a shipment of amphipods (grammarus shrimp) from indo pac sea farms and want to know if they will be able to live and multiply in the tank without predation from the animals currently in there. also in the tank is red and green macro algae, a shallow layer of crushed coral and a couple pieces of live rock. the sg is about 1.022, temp 78, ammonia and nitrites 0, ph 8.2.