The vitamin and calcium with D3 should be given twice a month. Also I dont know the temperatures in your house but the 100w seems excessive. A 40 or 60w bulb worms for most owners
I second the act that you should not have got these babies, a 10 gallon tank is absolutley inadequate for 3 babies let alone a jackson at all. If your asking about lights and if they need substrate then you really should have not got these. Make sure you know everyhting you need to know before...
If you put your crickets in the cage to free roam, they will chew threw the cloth. Go with the aluminum screen cage. Also if it is over spraying outside the cage, two sheets of clear shower curtain in the sides will do .
The columbian tegus tend to be more agressive than the argentine. I had an argentine and she was super friendly, that is when you didnt wake her up form sleeping in the back of the closet and she bites you....