:) dont worry everyone!
I am picking up a birob life 30 litre tank (http://www.reef-one.com/biOrb-Life-S30
) in a few days. It has built in 24hr light cycle from dawn to moonlight, a carbon filter and a heater.
The other option was for me to leave him at the pet shop, however I thought that although my housing is small, its still larger than his pot in the pet shop.
I have only had him one day, and there are allready lots of bubbles on the surface, so he must be a little bit happy :) (at least i hope he is)