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Other Pond Creatures

Black Japanese Trapdoor Snails

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Will Survive in Harsh Winter Climates with Ice Covered Ponds!
These snails are non-invasive and give live birth.
Not egg layers that overwhelm your pond.

The Black Japanese Trapdoor snail (Viviparis malleatus) is the preferred  species of water gardeners world-wide. This snail is black in color,  body and shell. Trapdoor snails are one of the few larger varieties that can survive the winter in Northern climates. This snail is a great  asset in keeping algae under control as they groom your plants, planting pots and water garden walls. They also cruise the pond bottom and  consume decaying matter such as leaves and fish food. These are live  bearing snails. They only breed a couple of times a year so don't expect them to multiply fast like regular egg laying snails.

Full grown snails are around 3" long. Order according to the size of water  garden or pond you have. For ponds and water gardens use at least 1  snail per 3 square feet of pond space. For snails to have a positive  effect on algae growth you should have 20 for small water gardens and 50 or more for larger water gardens. Farm ponds should have at least 200  to have any positive effect.

When your snails breed and give live birth (perhaps twice a year) pick the  tender baby snails out of the pond and rear them in an aquarium if you  want to save them. Koi and other creatures find the tiny snails to be a  great treat. Once they grow to an inch or so you can release them back  into your pond or water garden.

TRAPDOOR SNAIL FACTS:

Algae eating capacity:  Moderate to High
Survive in winter climates:  Yes
Plant eating capacity:  Low
Breathing:  Gilled 
Breeding:  Sexual, live-bearing

How many do you need?
For ponds and water gardens use at least
1 snail per 3 square feet of pond surface.
Example: You have a 9’ x 12’ pond.
9 x 12 = 108  108/3 = 36 Trapdoor Snails

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