Nice geckos! Do you have a gram scale to keep track of their weights?
A few pointers that I've noticed from keeping mine (I have 3, 2 of which are 7 years old now).
- Have 1 food dish per gecko when housing together to prevent food bullying / guarding
- Check weights weekly when housing together.. If you see one of them dropping in weight, isolate in a kritter keeper with its own food, etc.
- The little ones are more sensitive to humidity (or lack thereof). I would mist the terrarium daily (lightly) to help with this.
Good luck with them, they are fun lizards. 2 of mine are class pets and the kids LOVE getting to look for them and occasionally pet them when I take them out.
Also, I highly recommend the pangea ledge.. The clear acrylic one. I have 2 of these and they are so much easier to keep clean than the "mushroom" ledges, which get nasty fast and are hard to clean. The magnaturals vine cluster is awesome though. I have 2 in my zoomed terrarium and the geckos love climbing in them. I have a live plant also, but the vine cluster is handy for adding foliage high in the tank.