Not only do scavengers provide beauty and charm but they are the housekeepers of the water garden pool.
SNAILS: Devour algae and feed on decaying plant vegetation. They also help in cleaning up any excess fish food not consumed by the fish. It is recommended to add at least one snail for every one to two square feet of water.
Types of Snails

Trapdoor Snails have an unusual \"trapdoor\" on the bottom of the shell. They move throughout the water garden\'s bottom and on the aquatic vegetation.

Melantho Snails have an unusual spiral shell. They have a tremendous appetite for decaying leaves and algae.

Black Ramshorn Snails have a beautiful \"ramshorn\" shaped shell. They are excellent feeders of decayed vegetation and algae.

Mystery Snails are the largest of the North American snails, being the size of a large walnut. Most snails lay jelly-like eggs on the aquatic vegetation in the water. The mystery snails however came out of the water to lay cluster of eggs on the emerged aquatic stems of an umbrella palm, taro, etc.
Shop for snails and other scavengers at Tricker.com