What kind of lizard?

[asian arowana]

try green keel bellied lizards

 

[asian arowana]

a pair in a 55 should work

 

[eon aquatics]

Is this safe for terrarium animals?
Amazon.com: SUNYAY 12x80 inch Natural Coco Liner Roll Coconut Coir Liner Sheets Coco Mat for Planter Window Box Flower Basket Garden Decoration Animal Pet Pad Liner : Patio, Lawn & Garden

 

[Deadeye]

Is this safe for terrarium animals?
Amazon.com: SUNYAY 12x80 inch Natural Coco Liner Roll Coconut Coir Liner Sheets Coco Mat for Planter Window Box Flower Basket Garden Decoration Animal Pet Pad Liner : Patio, Lawn & Garden

It seems to be advertised as such. I’ve used similar in a terrarium with no ill effects.
Keep in mind you’ll want a substrate that holds humidity well.