Helix Aspersa

+  Introduction
+  Identifying
+  Family Tree
+  Predators

Care

+  Basic Care
+  Cleaning
+  Handling
+  Snail Baths

Housing

+  Supply List
+  Tanks and Housing
+  Ventilation
+  Substrate
+  Accessories
+  Light
+  Humidity
+  Temperature
+  Heating
+  Overcrowding & The Lonely Snail

Food Stuffs

+  Feeding Basics
+  Calcium
+  Never feed . . .
+  Food List
+  Frozen Foods
+  Calcium Content
+  Oxalates
+  Protein
+  Vitamins and Minerals

Health

+  F.A.Q.
+  Shells
+  Accidental Poisoning

Breeding

+  Breeding Basics
+  'Birth Control'
+  Eggs

Special Care

+  Baby Snail Care
+  Damaged Shells

Anatomy

+  General Anatomy
+  Shells

Other Stuff

+  Snail Gaurdian Agreement
+  Rainbow Bridge
+  Weird Facts
+  King Snails
+  Other Sites

Light

Artificial lighting used on terrariums fall into two main categories:

Incadescent lamps
Lamps in which an electric current passes through a tungsten resistance filament, enclosed in a vacume tube. The filament heats up until it glows and emits visible light.

Fluorescent lamps
Fluorescent lamps consists of a long, sealed glass tube with an electrode at each end; a small amount of murcury is contained within the tube. the inside surface of the tube is coated with a mixture of fluorescent powders. When an electric current is maintained through the lamp, the murcury becomes vaporized and gives off invisible ultraviolet radiationthat is absorbed by the fluoresent coating. The coating then emits visible light.

Next . . . Humidity