Yellow Ackie Monitor
(Varanus acanthurus brachyurus)

Family:  Varanidae

Origin:  Northern & Western Australia

Size:  16 – 24”

Life Expectancy:  15 – 25 years
Characteristics:    
Introduction:  Ackie monitors are a dwarf monitor species
that are becoming very popular in the UK.
Life Cycle
Enclosure:  Bigger is always better when it comes to
monitor enclosures. There are minimums that should be
followed however. The enclosure should be twice as long
as the monitor’s length and as wide as the monitor is long.
So for adult Ackies the minimum size enclosure should be
4 feet long x 2 feet wide x 2 feet high. If you have room for
a larger enclosure it will not go to waste. If you have the
room you may go higher as Ackies are partly arboreal and
will climb if given the opportunity. Ackies are very active
and will put any available space to good use. Also the
larger the enclosure the more available temperature and
humidity gradients there will be for your Ackies to choose
from. Remember that Ackies have a quick growth rate so
plan for that large enclosure ahead of time.
Temperatures and Humidity:
Temperature:  Perhaps the best thing you can do for any
reptile is to provide as many different temperature
gradients as possible. This will enable your monitor to be
able to pick the exact temperature they require. A good
range of gradients is 75-80 F on the cool side with a
basking site of 130-150 F. Keep it a little lower for
hatchlings around 120F. The basking site is only about the
size of the Ackies body. Too small of an area can lead to
burns from the monitor not being able to use the heat
properly. Too large of an area will keep the enclosure too
hot, resulting in death. Position a halogen or flood light
above it directing the beam straight down. The halogens
are probably the best source for heating. They operate
more efficiently and are cheaper than special reptile heat
lamps or ceramic heat emitters purchased from retail
reptile stores. They also usually last much longer as well.
Ideally the bulb should be between 45 and 75 watts
depending on the height it is to be suspended from the
basking site. Move them closer or farther away to achieve
the recommended basking temperature. Another way
would be to wire the bulbs into a dimmer and simply adjust
the dimmer to the recommended temps.
Do not simply throw in a 150 watt bulb thinking this will
solve all your heat requirements. It will quickly dry out the
air in the enclosure. You should be able to regulate the
temperature in your monitor’s enclosure with just the one
basking light and some vents.
There is no conclusive evidence whether it is detrimental
to use UV light for monitors. They have been raised by
breeders who do use it and those who don't with no
documented differences. If you want to use UV light you
may but it's not necessary.

Humidity:  Ackies require moderate 40 - 60%. A
hygrometer will help to monitor the humidity levels.

Food & Water:  In short, crickets, pinkie mice, superworms,
mealworms, and waxworms. Crickets should make up the
bulk of the diet especially for hatchlings. Mice should only
be offered once a week. Other exotic foods are often
offered as well. Meals should be supplemented with a
vitamin D3 enriched mineral supplement nearly every
feeding.

There are two ways to ensure your Ackies are hydrated
properly. One is to soak them weekly in warm water. The
depth should be no higher than the shoulder, so their
heads can be held above the water. This should not be
done with babies. Rather put them in a container with
soaking wet paper towels. Another way which is probably
more natural is a heavy misting a few times a week.
Regularly hydrating your Ackie will greatly aid in ridding
the toes of those stuck sheds.

Maintenance
Substrate:  Keep in mind that for monitor’s substrate is an
important part of husbandry. The best substrate to use is
plain old dirt. Some Ackie owners mix in a bit of sand as
well trying to create a sandy loam. The best soil to use is
the type you dig up yourself. It should be extracted from
an area that is free of pesticide and fertilizer use.
Agriculture fields are not a good source. Other than that it
may be purchased in bag form from a garden center.
However the black soil tends to dry out rather quickly.
Make sure here as well that it contains no growing
additives, usually the cheaper the better. Maintaining a
level of moisture in the substrate is important for holding
burrows as well as for insuring complete sheds. Not doing
this could cause loss of toes or tails from retained dead
skin.

If you’re planning to use dirt/soil/sand as a substrate, it is
best to feed your monitor in a separate feeding tub so it
does not ingest the substrate, which can cause impaction.

The easiest and cleanest looking of the substrates
available is either reptile carpet. Reptile carpet can be
easily cut to the size of the tank you want to use and
thrown in the washing machine when it gets dirty (it’s best
to have a spare piece to put in when one is being washed).