To add heat you may need an under the tank heat mat, mounted to the side of the tank. Most pet shop s in us carry them and hopefully in uk as well.

For humidity, the towel is probably not going to keep it in well enough. Some members on here have used saran wrap under the lid over the top of the tank and then put the lid back over it.


I hope I've been somewhat helpful.
.:* Lisa *:.
laissez le bon temps roulet! :-)