Personally if I was you I would get rid of the sand, others may tell you different. Sand has been known to cause many implications including death from impaction, especially in young leos. I have used sand, carpet, tile and paper towel, I would recommend the last two most. Here is a list of thing you need:
At least a 10 gallon tank, costs about $10 or more if the one you have is too small
A heating pad (or heating lamp), costs $10- $20 for a cheap one
A thermometer or thermostat touching the floor of the tank (to make sure the temperature does not get too hot or too cold)
A humid hiding spot to aid shedding (just cut a hole in a tupperwear container)
Another dry hiding spot
A water dish
A small dish full of straight calcium carbonate (however, you also need to dust food items with a calcium/vitamin D3 supplement)
I think I've listed all of the necessities, if anyone sees any I missed please correct me. Any more questions just ask.
Lisa
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0.1 Hypo Leopard Gecko
0.1 Albino Leopard Gecko
0.1 Blizzard Leopard Gecko
1.0 Albino Pacman Frog
1.0 Lovebird (Tony)
1.0 Elkhound Cross (Otto)
0.1 Malamute Cross (Paris)
6.0 Bettas