Hello and welcome. My name is ***** ***** I'm a biologist with a special interest in reptiles. From what you have described, it sound slike your gecko is suffering from a respiratory infection. These infections are serious in lizards because they can quickly progress to pneumonia, which is life threatening. Your gecko will need to be seen by a vet as soon as possible because prescription antibiotics will be needed. This link will take you to a directory of reptile vets:
I realize it will be difficult to find a vet tonight, but I hope you will be able to locate one first thing tomorrow. In the meantime, you are probably right that your gecko is dehydrated, but there is a better way to help than pouring water on him.Buy some Pedialyte (yes, the kind for human infants). Prepare a shallow bath consisting of 1/2 water at about 85*F and 1/2 Pedialyte. Soak your gecko for about 20 to 30 minutes. Reptiles can absorb the electrolytes and fluids through their vents (where droppings pass out), so make the water deep enough to cover the vent. Be sure to supervise closely.
Proper temperatures are especially important when they are ill, so double check your temperatures. The warm side should be 88*F and the cool side 82*F.
All you'll be bale to do tonight is provide a long soak and make sure the temperatures are correct. I hope that will be enough to get him through the night. Let me know in a REPLY if you need anything else.
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