without getting to much into things my sisters village idiot boyfreind has left her and the baby as well 3 fishtanks including a small tank containing a pair of fire bellied newts which ive ended up with there currently in a small glass invert tank i cleaned them out on reciving them (the smell was eye watering)and added a clean sand bottom and a plastic log to allow them to climb out of the water both are eating well but i need to know a bit more about long term care firstly i know the tanks too small but what is the minimum size? all the tanks i have spare are of small footprints googling gives about a 10g long does anybody concer? anything else i should know?