Welcome to the forum and the world of chameleons!
Although it always best to research before buyinhtml
How old is it? You said it eats 6 crickets a day... of what size? Dusting at the store is not going to work...they need to be dusted just before feeding them to the chameleon. More on dusting later.
chameleon there is nothing to do once you have one but move on and learn quickly...and this is the right place to do that!
Putting it in the window will give it light but not the UVB it needs...UVB won't pass through the glass.
If the vent is blowing near him I would move the cage so he won't get a draft.
Be careful you dont hurt it if you remove the boogers!
You said its hissing...could it be wheezing? Maybe its a respiratory infection?
Whats the temperature in the basking area?
You can sex it by looking at its heels...males have tarsal spurs...
http://web.archive.org/web/20060819...m.com/html/husbandry/glossary/tarsalspur.html
You have substrate in the cage...what is it? You have to be careful it's not something that will not pass through it if it accidentally eats some of it.
For real plants...make sure they're non toxic and well washed...both sides if the leaves.
You might want to cover the soil with rocks big enough that the chameleon can't ingest them too.
If it's a female....and sexually mature...it needs an egglaying bin in its cage veiled females can lay eggs without having been mated.
Ask me about this if she's female.
It's recommended that you dust the insects with a phosphorous-free calcium powder at almost every feeding to help make up for the poor ratio of calcium to phosphorous found in most feeder insects.
It's recommended that you dust with a phosphorous-free calcium/D3 powder twice a month to ensure that the chameleon gets some more without overdosing it and letting it produce the rest of the D3 from its exposure to the UVB light. D3 produced from exposure to the UVB won't build up in the system like D3 from supplements will as long as the chameleon can move in and out of it at will.
It's recommended that you dust twice a month with a vitamin powder that contains a beta carotene prOformed source of vitamin A. prOformed sources wont build up in the system like prEformed sources will and thus it leaves you in control of the prEformed vitamin A.
Appropriate temperatures allow for proper digestion and thus play a part in nutrient absorption.
Feeding/gutloading the crickets and other insects with a wide assortment of greens and veggies such as dandelion greens, kale, collards, endive, escarole, squash, zucchini, sweet red pepper, sweet potato, carrots, etc and a small amount of fruit such as berries, melon, apples, pears provides a good diet for the chameleon.