Be careful what kind of ant traps you use. If you use poison, the ants may ingest it and travel into the cham enclosure. You don't want your cham to eat the ants who are full of poison.
Looks like you have done a good job, but I don't think the enclosure has adequate foliage. I think you need a central tree, like a ficus. Chameleons like a dense environment to hide, I do not see that here. A Pothos combined with a nice tree/plant will be awesome. Most times I have to really...
Ok, that explains it. I read DIY Mistking and assumed they were using a Mistking pump. I would still give it a try mounting the pump on the floor and let gravity help.