Wow you went deep. One block of Reptichips is enough to do 3 of my T8s and 2 of my T10s so basically 5 4x2 cages. I only go about 1/2" deep though as i use flexwatt and something i noticed which you can let me know if it is the same for you.
When you go deep with any of the coco stuff, does it start to smell musty or swampy after a few days? For me when i first used the stuff, i went deep on the cool side and shallower on the hot side but after a few days, when i would slide the cage open, it would have that musty/swampy smell.
Since going only deep enough to cover the floor and allow ventilation throughout the substrate, it doesnt have any smell.
Anyways, let me know what you notice.
And on a side note, i had Caesar out today and my god, he has grown and put on girth and weight. Didnt get any pics as I was too busy dealing with Caesar haha.