Here's a copy from the dse on requirements for your crocodiles.
"3.1.5. Crocodiles
a) For small specimens (up to 25 cm total length), up to two specimens can be maintained in an enclosure measuring 60 cm long x 30 cm wide x 30 cm high.
b) For all specimens, the pond must be at least twice the length of the largest specimen and have a width at least as great as the length of the largest specimen
c) The pool must be deep enough for the largest specimen to submerge completely and swim freely.
d) An additional area of dry land must be provided, which is at least as long and wide as the length of the largest specimen, and which has a basking site with a temperature of 30–33C.
e) It is recommended that only crocodiles up to a total length of 2.5 m are kept. Applications to keep larger specimens should be considered on a case-by-case basis.
3.2. Outdoors
a) Outdoor enclosures are usually only suitable for species from a similar climatic region to that of the enclosure location, as they provide a natural regime of climatic and seasonal conditions.
b) Outdoor enclosures must not be dug below ground level unless there is provision of adequate drainage, notwithstanding clause c), because of the possibility of flooding or muddy conditions following rain.
c) The walls of outdoor enclosures must be constructed of smooth, non-climbable barriers and should continue into the ground not less than 50 cm to prevent reptiles from escaping by climbing or burrowing out. The walls of the enclosure should be of sufficient height to prevent escape. A 45 return, angled inwards on the top of the wall, will also help prevent climbing reptiles from escaping.
d) Shrubs must not be placed close to the enclosure walls, but situated away from them to prevent reptiles from escaping.
e) Enclosures must be constructed so as to prevent unsupervised people from contacting the animals contained within.
f) Outdoor enclosures must:
* provide access to direct sunlight throughout the day;
* provide adequate hiding facilities for all reptiles housed within;
* provide adequate shade at all times of the day;
* be well drained to prevent the accumulation of water and facilitate dehydration of the substrate;
* provide areas which are permanently covered and dry.
g) Crocodiles should not be kept completely outdoors in Victoria. They may be kept in a situation which is partly outdoors provided they have ready access to shelter and appropriate heating.
h) Enclosures must be designed to facilitate ease of maintenance and keeper safety/access."
and also a shortcut to the code of practice for Victoria where this was copied from.
http://www.dpi.vic.gov.au/dpi/nreni...56DC6000F7125E7F8E4DBA5A6FDD04A256DEA0027A820
