... Pond in Aquaculture; killing snail, various wild fishes , the unusable-fish,loach, spawns of frogs, tadpoles, earthworms, leech, nematodes, other ... Application:1. Eliminate the unwanted or wild fishes in the fish ponds and shrimp ponds; 2. Help shrimps take off shell ... algae; 4. fatting the water and strengthens the fertility soil;5. Eliminate earthworm,getting rid of many kinds of the pests ...