Right now I am using repti bark.

I was wanting to do a setup similar to my green anole's. A layer of gravel with a layer of Eco Earth on top of it. The grtavel is for water to drain in to.

My anole has been i nthis set up for almost a year. I have NEVER changed the substrate. It also looks so natural.

Would this set up be ok for a ball python? I already spot clean the repti bark.
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0.0.1 Ball Python
0.0.1 Checkard Garter Snake
0.1.0 Green Anole
1.0.0 Red Eared Slider
1.0.0 Russian Campbell Drawf Hamster
0.3.0 Love Able muts