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I got this Dragon Fountain from a Spencers store...? - spencers dragon

OK, so this source was Spencer ... A sculpture of a dragon, a castle, and under him are doing well, because I think a ball made of acrylic, and down a bowl of water. There is a bomb and an LED that changes color. What happens is the lights shine acrylic sphere, which in a well thats connected to the pump, he kills the ball into the water as a separate tube from the pump, goes to some where around the dragon, that the Water leak on the dragon's mouth makes the ball. I say this so you know exactly what I have, I do not know if you buy before, but they have a lot of dragons in certain sources. Now that there is in the fundamental question (s) ... This crazyntaine has a very nice, with a little spray mechanism. I do not know how it works, I am now the past is not used anymore, but my questions are;
1. What is fog?
2. How can I overcome this fog?
3. Has anyone tips for extra cleaning of these types of sources?
Unfortunately, this is so long, I wish there was a website for these things. Thank you for your answers. ^ _ ^