Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to care for a house gecko [title] Provide a 5-10 gallon (18. 9-37.9 l) tank for your gecko. [step] One single house gecko does not need much space to be happy and healthy. A deeper tank, with high walls, is ideal for a gecko.

Ending1: Keep your gecko in a small enclosure during the day, during thunderstorms, or when it is in its shell. [substeps] Be sure to keep the water ratio around 12-30 cups (2.4-3.7 l) per liter. Ending2: A 20-30 gallon tank allows for least 10 gallons of water per day. Larger tanks can only house four depending on how many geckos you have. Ending3: Use a glass tank with a screen lid so the gecko gets enough ventilation in his tank. [substeps] If you decide to keep more than one gecko at a time, you should add five gallons to the space per gecko. Ending4: [substeps] A deep tank should be at least 10 centimeters (0.82 in) by 20 centimeters (1.92 in). The actual humidity level in the tank should be no greater than 18-35 %.

Answer format: ending1/ending2/ending3/ending4