Coconut substrate. I was told by others that this would not harm the cham.
I hope your chameleon isn’t impacted….either from the substrate or the plastic plants.
You need to a phos free calcium (no D3) powder dusted on the insects at every feeding but twice a month. On those two feedings you need to use reptivite with D3 or another vitamin powder with a source of D3 and a prEformed source of vitamin A in it. All powders should be dusted on lightly when used…you don’t want ghost or powdered donut looking insects.
It’s important that the D3, calcium, phos, and vitamin A be I n a balance to keep your chameleon healthy.
Vitamin A comes in two forms…prEformed and prOformed. PrOformed is Usually beta carotene and can’t build up in the system…but may not be very useful to chameleons. PrEformed can build up in the system and lead to health problems. Look for words like retinol, retinyl, etc for it.
UVB lights recommended are the long linear Arcadia 6%or the Reptisun 5.0 long linear tube light.
Your chameleon should not get an overdose of vitamin D3 from exposure to the proper UVB lights…but too much D3 from supplements can lead to an overdose.
Recommended insects include crickets,locusts, roaches, silkworms…and once in a while waxworms, super worms, hornworms.