Aqua One ReefSys 255 User manual

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Read and follow allRead and follow all
safety instructionssafety instructions
and important noticesand important notices
in these instructionsin these instructions
as well as on theas well as on the
product itself.product itself.
ReefSys
255/326
Instructions version: 20/12/2019
Australia:
www.aquaone.com.au
New Zealand:
www.aquaone.co.nz
United Kingdom:
www.aquaone.co.uk
All other countries:
www.aquaone.com.au
CUSTOMER CARECUSTOMER CARE
Thank you for choosing this Aqua One product.
Your Aqua One product is covered for parts and labour for 1 year from the date of purchase as detailed in
the terms of the Guarantee in this instruction manual. For any inquiries or concerns regarding this product
or any of our products, please do not hesitate to contact your local Aqua One Retailer or visit Aqua One
Customer Care online in your country of purchase via the websites listed.
All aquatic species have
specic requirements
for their care. Please
seek advice from
your Aqua One retailer for
correct care requirements and species
compatibility.
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Before you work on
your aquarium, wash
your hands and arms.
It is very important to
remove dirt, moisturiser and
other impurities.

2
IMPORTANT SAFEGUARDS
If you are in any doubt about the electrical installation orIf you are in any doubt about the electrical installation or
safety of this product you must consult a qualied electrician.safety of this product you must consult a qualied electrician.
Water and electricity can be dangerous.
Do not attempt repairs yourself. Return the
appliance to an authorised service facility
for repair.
Children should be supervised when using
this item.
Arrange a drip loop for ea ch cable to stop
water entering the power socket. If the plug
or the socket does get wet, disconnect the
fuse or circuit breaker before unplugging
the power plug.
Don’t operate the appliance if it has
a damaged cord or plug, or if it is
malfunctioning, or damaged in any
manner.
Ensure your hands are dry when turning
the power switch on or o󰀨 and when
inserting or removing the power cable from
the socket.
Never yank the cable to pull it from the
socket. Pull the plug carefully to disconnect.
Unplug the appliance from the electrical
outlet when not in use or before any type of
maintenance or cleaning.
All products are supplied with tted plugs.
This plug should not be tampered with in
any way or removed. Removal or tampering
with the plug invalidates our guarantee
o󰀨ered with this product.
Make sure any component mounted on a
tank is securely installed before
operating it.
If the appliance or any electrical component
of the appliance (non-immersible equipment
only) falls into
the water or gets wet, don’t reach for it.
Unplug it and then retrieve it.
If the appliance shows any sign of water
leakage, unplug it from the power source.
Examine the appliance after installation. It
should not be plugged in if there is water
on parts which are not intended to be wet.
Do not use the appliance for reasons other
than the intended use.
Do not install or store the appliance where it
will be exposed to weather or temperatures
below freezing.
Ensure input voltage is the same voltage
as your local power supply.
A G.F.C.I (Ground fault circuit interrupter)
& surge protector is recommended for all
electrical appliances.

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3
SPECIFICATIONS
Carefully unpack the aquarium making sure you keep all the packing material untilCarefully unpack the aquarium making sure you keep all the packing material until
all the parts of the product have been found and the product has been assembled.all the parts of the product have been found and the product has been assembled.
This product is shipped to you in a factory sealed carton. Should the productThis product is shipped to you in a factory sealed carton. Should the product
malfunction in any way or if the unit is damaged and requires replacement,malfunction in any way or if the unit is damaged and requires replacement,
contact the retailer where the product was purchased for inspection.contact the retailer where the product was purchased for inspection.
MODEL IMENSIONSD
RREPLACEMENTEPLACEMENT PPARTSARTS
&& FFILTERILTER MMEDIAEDIA
AQUARIUM
VOLUME
SUMP
VOLUME
SYSTEM
VOLUME*
REEFSYS 255
REEFSYS 326
207L
278L
48L
48L
255L
326L
90L X 55D X
53/80H
120L X 55D X
53/80H
53443-FS
Filter
Sock
MODEL
53443-FS
REEFSYS 255
REEFSYS 326
*Sump volume was calculated with*Sump volume was calculated with
all ba󰀪es set to maximum height all ba󰀪es set to maximum height
at a ow rate of approximately at a ow rate of approximately
3500L/h.3500L/h.
Actual sump and total system volume willActual sump and total system volume will
vary according to ow rates, ba󰀪e settings vary according to ow rates, ba󰀪e settings
and equipment used.and equipment used.
To calculate actual system volume, weTo calculate actual system volume, we
recommend that the system is set up withrecommend that the system is set up with
all equipment in place and running. Afterall equipment in place and running. After
the water levels have stabilised, turn o󰀨 the water levels have stabilised, turn o󰀨
power to all equipment.power to all equipment.
Once all water levels have settled (allowOnce all water levels have settled (allow
at least ten minutes), measure all waterat least ten minutes), measure all water
levels and calculate volume from theselevels and calculate volume from these
measurements.measurements.
Alternatively, if the system is lled using Alternatively, if the system is lled using
containers, it is relatively simple tocontainers, it is relatively simple to
calculate by counting the containers used.calculate by counting the containers used.

4
WHAT’S IN THE BOX
MMAJORAJOR CCOMPONENTSOMPONENTS
33
11
22
66
44
55
77
ReefSys 255 ReefSys 326
Overow Cover
1
7
2
3
4
5
6
Removable Support
Glass Aquarium
Foam Base
Cabinet
Plumbing Assembly
Sump
1010
1313
8899
1111 1212
1414

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5
ReefSys 255 ReefSys 326
SSUMPUMP CCOMPONENTSOMPONENTS
Top-Up Reservoir Lid8
9
10
11
Sock Silencer (x2)
Filter Sock (x2)
Sump Ba󰀪e
Movable Ba󰀪e
12
13
14
Ba󰀪e Screw & Nut (x8 ea)
Sump Foam Base
PPLUMBINGLUMBING
Adjustable Outlet
16
1616
1717
1818
2020
2323
2121
2222
2424
1717
1818
1919
2020
2323
2121 2222
2424
Main Drain
17
Upper Return Pipe
18
Emergency Drain
19
Lower Main Drain
20
Lower Return Pipe
21
Barrel Union
22
23 Gate Valve
24 Lower Emergency
Drain
1919
1616
O-Rings
25 Return Hose
26 Quick Coupling
2525
2626
O-Ring
27 Hose Clamp (x4)
2727

6
SETTING UP
Place the aquariumPlace the aquarium
stand on a level surfacestand on a level surface
strong enough tostrong enough to
support the weightsupport the weight
of the aquarium, allof the aquarium, all
equipment, substrate,equipment, substrate,
ornaments and waterornaments and water
in the aquarium.in the aquarium.
Note that water is heavyNote that water is heavy
(1kg per litre).(1kg per litre).
PPLACELACE AAQUARIUMQUARIUM
Consider whereConsider where
you are goingyou are going
to place theto place the
aquarium. Avoid directaquarium. Avoid direct
sunlight and areassunlight and areas
that experience large that experience large
temperature uctuations temperature uctuations
such as near heaters orsuch as near heaters or
air conditioners.air conditioners.
Assemble cabinet according to
the instructions included with
the cabinet. Ensure that the
sump and the centre support
are in place.
1L = 1kg
Secure the Removable
Support in place with the
four screws.
Place the aquarium on the
cabinet. Ensure that the Foam
Base is in place.
ReefSys 255 Shown
IINSTALLINGNSTALLING PPLUMBINGLUMBING
Take care not toTake care not to
overtighten theovertighten the
plumbing ttings. plumbing ttings.
Firm handFirm hand
tightening is all that istightening is all that is
required.required.
Overtightening may leadOvertightening may lead
to damage to the ttings to damage to the ttings
or the aquarium.or the aquarium.
ReefSys 255 Shown
Main
Plumbing
Fittings Quick
Coupling
Before installation, check that all o-rings are presentBefore installation, check that all o-rings are present
and properly seated. Missing or damaged o-rings willand properly seated. Missing or damaged o-rings will
mean that the connections will leak.mean that the connections will leak.
O-Rings*
* O-rings are illustrated in red for* O-rings are illustrated in red for
clarity. Actual o-rings are black/grey.clarity. Actual o-rings are black/grey.
The Removable Support is requiredThe Removable Support is required
to support the aquarium when full. to support the aquarium when full.
NEVER remove the support unlessNEVER remove the support unless
aquarium is no more than half lled.aquarium is no more than half lled.
thethe

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7
IINSTALLINGNSTALLING PPLUMBINGLUMBING
Place upper plumbing assemblies as
shown to the right. Insert the threads
into the holes in the bottom of the over-
ow.
Ensure that the pipes are in the order
shown according to which ReefSys
aquarium you have
It is easiest to place the complete t-
tings one at a time.
Position lower plumbing assemblies as
shown and secure them by hand tight-
ening the bulkheads as shown.
Be sure to check that they are posi-
tioned correctly in relation to the sump.
Attach the exible outlet as shown below.
Placing and tightening the plumbing ttings is Placing and tightening the plumbing ttings is
best done with two people. While one personbest done with two people. While one person
places and holds the upper ttings in place, the places and holds the upper ttings in place, the
other can attach and tighen the lower assemblies.other can attach and tighen the lower assemblies.
ReefSys 255 ReefSys 326
Connect the return hose to
the quick connect coupling.
Use hose clamps to secure
the connection.
Connect the return hose
to the lower return pipe.
Secure with a hose clamp.
Straightening HoseStraightening Hose
The hose included may have beenThe hose included may have been
coiled for months in the box. coiled for months in the box.
Because of this, it will tend toBecause of this, it will tend to
remain “curly”.remain “curly”.
To reduce this, soak the hose in hotTo reduce this, soak the hose in hot
(not boiling) water for ten minutes.(not boiling) water for ten minutes.
Then position it straight until itThen position it straight until it
cools down.cools down.
Fitting hose to pipesFitting hose to pipes
Fill a cup with hot (not boiling)Fill a cup with hot (not boiling)
water and soak the end of the hosewater and soak the end of the hose
for a few minutes. Whilefor a few minutes. While
the hose end is hot, pushthe hose end is hot, push
it at least 2cm onto theit at least 2cm onto the
tting and allow to cool.tting and allow to cool.
Preparing andPreparing and
Attaching HosesAttaching Hoses
ReefSys 255 Shown
CCONNECTINGONNECTING RRETURNETURN HHOSEOSE

8
SETTING UP cont.
Return
Hose
Quick
Connect
Return Pump
(not included)
CCOMPLETEDOMPLETED PPLUMBINGLUMBING
ReefSys 255 Shown
SSUMPUMP SSECTIONSECTIONS
Return
pump
chamber
Automatic
top-up
reservoir
Filter sock
chamber
Sump inlet
Adjustable
ba󰀪e
brackets
The ReefSys is designed to be a exible The ReefSys is designed to be a exible
base for you to customise to suit yourbase for you to customise to suit your
needs.needs.
Because of this, exactly how the sump is arranged Because of this, exactly how the sump is arranged
and what equipment is installed will vary from systemand what equipment is installed will vary from system
to system.to system.
Please seek advice from your Aqua One aquariumPlease seek advice from your Aqua One aquarium
specialist when choosing the equipment used and thespecialist when choosing the equipment used and the
layout of the sump.layout of the sump.
The ReefSys has beenThe ReefSys has been
tested with ows of up to tested with ows of up to
approximately 8000L/h. It is approximately 8000L/h. It is
not recommended to exceed not recommended to exceed
this ow rate through the sump. this ow rate through the sump.
If more circulation is desired, If more circulation is desired,
wavemakers and similar circulationwavemakers and similar circulation
pumps inside the aquarium itself arepumps inside the aquarium itself are
recommended.recommended.
AAUTOMATICUTOMATIC TTOP-OP-UUPP RRESERVOIRESERVOIR
If you are using an
Automatic top-up system,
set it up in the ATO
reservoir (shown in red).
The easiest way to ll the
reservoir is to siphon or
pump water into it from a
bucket.
Sump
ba󰀪e

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9
SETTING UP YOUR SUMP
FFILTERILTER SSOCKSOCKS
The lter sock holder will hold two lter socks to ensure e󰀩cient pre-ltering at higher ow rates.
When placing the socks, ensure that the plastic frame edge is ush against the holder so that the
water cannot bypass the sock.
To minimise any noise from the water owing through the socks, place the sock silencers onto the
socks as shown.
UUSING THESING THE BBAFFLESAFFLES
The two ba󰀪es in the sump are designed to allow for maximum exibility in equipment selection
and placement.
To minimise any tricklingTo minimise any trickling
sound from the sump,sound from the sump,
avoid excessive height avoid excessive height
di󰀨erences between the di󰀨erences between the
sections of the sump.sections of the sump.
To adjust the height of the
ba󰀪es, simply loosen the
screws and raise or lower the
movable panel as shown.
The movable ba󰀪e may be
placed in any of the three
ba󰀪e brackets.
The sump ba󰀪e is xed in
place.
Sump Sections
A - Return pump chamber.
There should be enough water
to comfortably submerge the
return pump.
B - Skimmer chamber provides a constant lower water
level to suit protein skimmers and similar equipment.
C - Refugium section. Highest water level suitable for a
refugium or equipment needing deeper water to function.
B CA If adjusting the heights of If adjusting the heights of
the ba󰀪es in the sump, be the ba󰀪es in the sump, be
aware that this will a󰀨ect aware that this will a󰀨ect
the total system volume.the total system volume.
It also a󰀨ects the maximum safe It also a󰀨ects the maximum safe
running water level.running water level.
A
B
C

10
FILLING AND ADJUSTING FLOW
FFILLING THEILLING THE AAQUARIUMQUARIUM
The rst time you ll the aquarium, it is
important to be sure that the system is not
overlled.
To do this, rst install all plumbing,
equipment, and place ba󰀪es as desired.
Fill the aquarium so that the water is just
beginning to spill into the sump. Then ll
the sump to a few centimetres from the top.
Turn all equipment on and wait for the
water level in the sump to stabilise - this
is the maximum running water level in the
current conguration.
Mark the water level with a marker pen and
use this as a reference for the future.
ReefSys 255 Shown ReefSys 255 Shown
AADJUSTING THEDJUSTING THE DDRAINRAIN
Set the gate valve to
around the middle position
(around three turns from
fully closed) and start the
return pump.
O
P
E
N
C
L
O
S
E
ReefSys 255 Shown
The drain of the ReefSys is designed to run silently by minimising turbulence in the drain pipes. When
running correctly, the main drain will work as a full siphon and no air will be drawn through. For it to run
correctly, the plumbing will need to be tuned using the gate valve to control the ow.
The emergency drain should be able to handle the ow of water in case the main drain The emergency drain should be able to handle the ow of water in case the main drain
becomes clogged. It is a good idea to test that the emergency drain can handle the ow in becomes clogged. It is a good idea to test that the emergency drain can handle the ow in
your conguration if you are running a high ow rate through the sump. To do this, simply your conguration if you are running a high ow rate through the sump. To do this, simply
turn the gate valve to the fully closed position and monitor the drains for ten minutes.turn the gate valve to the fully closed position and monitor the drains for ten minutes.
If the ow is too high for the emergency drain, it is strongly recommended to reduce the ow rate If the ow is too high for the emergency drain, it is strongly recommended to reduce the ow rate
through the sump.through the sump.
Wait a few minutes for the
water levels to stabilise, then
close the gate valve a little
(about a quarter turn) and
wait for at least ten minutes.
Repeat this procedure until the
water level in the weir is just below
the emergency drain. Once the
correct setting is found, it should
require little attention but may
need adjustment from time to time.