Choose based on tank size, water type (fresh vs salt), and maintenance preference
Alarm Sensitivity
Look for multi-level alerts (low-water, pump failure, power loss)
Installation Complexity
Some kits require drilling; others use magnetic or suction mounts
Reservoir Capacity
Larger reservoirs need less frequent refills; compact systems suit smaller spaces
Integration & Expandability
Ability to add extra sensors or link with existing controllers (e.g., Apex, Vertex)
Power Backup Options
Battery or UPS compatibility prevents failure during outages
Installation Guide
Setting Up Your Auto Top-Up Kit
Select Sensor Location
In your sump or display tank, avoiding high flow areas
Mount Sensor Securely
Use provided brackets, magnets, or suction cups; ensure the sensor face is clean
Position Pump & Tubing
Place the refill pump below reservoir water level; run tubing through a drip loop
Prime the Pump
Fill the tubing with water to avoid dry start damage
Connect Alarm Module
Wire sensor and pump to the control unit; plug in power adapter
Calibrate Water Levels
Adjust sensor trip points to your desired minimum and maximum heights
Test System
Simulate low-water to confirm pump activation and alarm triggering
Secure All Components
Tidy cables and tubing to prevent entanglement with other equipment
Clean Sensors Monthly
Remove mineral buildup and algae with vinegar solution
Inspect Tubing
Check for kinks, blockages, or wear; replace every 6–12 months
Test Alarm Functions
Trigger the alert manually to verify buzzer and lights work
Lubricate Pump Seals
Follow manufacturer guidelines to prevent drying and cracking
Monitor Reservoir
Refill with RO/DI water and change out stagnant water periodically
Firmware Updates
For digital controllers, install software updates to improve performance
Pump Fails to Activate
Check sensor alignment, power connections, and ensure tubing is primed
False Alarms
Clean sensors of dirt or bubbles; secure sensor mounting to eliminate vibrations
Water Leakage
Inspect tubing connections and use hose clamps or silicone sealant if necessary
Uneven Refill
Adjust pump flow rate or change sensor trip thresholds
Weight
0.56 kg
Shipping & returns
Tracked delivery anywhere in New Zealand. It is free on orders of $75 or more, and a flat $25 below that. Allow 5 to 7 days, after a 24 to 48 hour handling time.
Our own policy gives you 15 days from purchase to return something you have changed your mind about, in its original packaging and at your own postage cost. New Zealand law sets no cooling off period for an online order, so this is the shop's promise rather than a statutory one.
If it arrives faulty, damaged or not as described, we put it right at no cost to you under the Consumer Guarantees Act 1993, return postage included.
Wipe the sensor prism at every water change. Keep the reservoir covered so nothing falls into it.
Auto RefillReplaces evaporated water automatically
LED AlarmTells you when the level is wrong
One Key DrainSecond function on the same pump
Optical SensorPrism design that stays readable
About this product
Tops the tank up and tells you when something is wrong.
An auto top off kit with a dual float sensor, a pump and an audible alarm, so evaporation gets replaced before the salinity moves.
Double application aquarium alarm for auto refill & one-key drain water
Easy to install and use, no complicated programs
FREE FAST DELIVERY ACROSS NEW ZEALAND FOR ALL ORDERS $75+ OR MORE - (Save $25)
Our product uses an ultra-wide prism, and point C will always be kept clean.
When the point below B is covered with impurities for a long time, the monitoring fails and overflows, but C is not affected, and an alarm will sound.
When the water level line is near A (the first monitoring probe), the product will automatically refill water;
Still deciding?
Not sure yet? That is fine.
New Zealand law gives no automatic cooling off period on an online order, so we give you one ourselves: 15 days from purchase to return an item you have changed your mind about, in its original packaging, with the return postage yours. That sits on top of your consumer guarantees, which nothing we write can take away.
If it turns up faulty, damaged or not as described, that is on us. The Consumer Guarantees Act 1993 guarantees cover you, we pay the return postage, and for a failure of a substantial character you may reject the goods and choose a refund or damages. Read the full detail on our refunds and returns page, or ask us anything before you order.
Does an Aquarium Alarm Auto Top Up Kit help with maintaining water chemistry?
Yes, an Aquarium Alarm Auto Top Up Kit helps maintain water chemistry by ensuring that the water level remains consistent. This prevents fluctuations that can alter salinity, pH, or other critical parameters for your aquarium’s inhabitants.
Is a Fish Tank Auto Refill Pump easy to install?
Yes, a Fish Tank Auto Refill Pump is simple to install. It typically requires minimal setup and can be easily connected to a water reservoir, offering quick automation for maintaining consistent water levels.
Can an Aquarium Alarm Auto Top Up Kit be used in planted tanks?
Yes, an Aquarium Alarm Auto Top Up Kit is perfect for planted tanks. It helps maintain the water level and humidity, ensuring that your plants and fish thrive in a consistent, stable environment.
How does a Fish Tank Alarm detect water level changes?
A Fish Tank Alarm uses sensors to monitor the water level and will alert you if it falls too low or rises too high. This ensures you are immediately notified of any irregularities that could affect the health of your tank.
Can a Fish Tank Auto Refill Pump be used for freshwater aquariums?
Yes, a Fish Tank Auto Refill Pump works equally well for freshwater aquariums. It ensures that the water level remains stable by automatically adding fresh water, preventing issues caused by evaporation.
Does an Aquarium Alarm Auto Top Up Kit help reduce maintenance?
Yes, an Aquarium Alarm Auto Top Up Kit reduces maintenance by automatically replenishing water levels. It takes care of one aspect of tank upkeep, allowing you more time to focus on other tasks, such as cleaning and feeding.
Is a Fish Tank Alarm suitable for marine aquariums?
Absolutely. A Fish Tank Alarm is perfect for marine aquariums, where maintaining stable water levels is crucial. It ensures that fluctuations due to evaporation or other issues are promptly detected and managed.
How does an Aquarium Alarm Auto Top Up Kit prevent tank imbalances?
An Aquarium Alarm Auto Top Up Kit ensures that water levels are consistently maintained, preventing any imbalances caused by evaporation. This stabilises the salinity, pH, and temperature, essential for a healthy aquarium ecosystem.
Can a Fish Tank Alarm help with maintaining proper salinity?
Yes, a Fish Tank Alarm can help with maintaining proper salinity in saltwater tanks by ensuring that water levels are kept consistent, preventing salinity imbalances caused by evaporation or overflow.
How does a Fish Tank Auto Refill Pump help with tank aesthetics?
A Fish Tank Auto Refill Pump helps maintain the tank’s appearance by preventing water level fluctuations. With consistent levels, the water stays clear, and the visual appearance of the tank remains appealing.
Can an Aquarium Alarm Auto Top Up Kit be installed with a filtration system?
Yes, an Aquarium Alarm Auto Top Up Kit can be installed alongside filtration systems. It will top up the water while your filter system runs, ensuring that your tank’s water level remains consistent for optimal filtration performance.
Does a Fish Tank Alarm work with any water reservoir?
Yes, a Fish Tank Alarm works with any compatible water reservoir that is connected to your tank. Whether you use a freshwater source, a dechlorinated water tank, or a tap connection, the alarm will function properly.
Can a Fish Tank Auto Refill Pump help with evaporation in open tanks?
Yes, a Fish Tank Auto Refill Pump is especially useful in open or uncovered tanks where evaporation is a constant issue. It automatically adds water as needed to counteract evaporation and keep the water level stable.
Is an Aquarium Alarm Auto Top Up Kit safe to leave running overnight?
Yes, an Aquarium Alarm Auto Top Up Kit is safe to leave running overnight. It is designed to work 24/7, maintaining water levels consistently without posing any risk to your aquarium’s health or the surrounding area.
How can a Fish Tank Alarm help me save water?
A Fish Tank Alarm helps save water by alerting you if the water level rises or falls beyond set parameters. This can prevent wasteful overflow or unnecessary topping up, ensuring you only use the water you need.
Does a Fish Tank Auto Refill Pump use a lot of electricity?
No, a Fish Tank Auto Refill Pump is designed to be energy-efficient, using minimal power while operating continuously to maintain water levels. It is a cost-effective solution for keeping your aquarium in top condition.
Is an Aquarium Alarm Auto Top Up Kit compatible with all aquariums?
Yes, an Aquarium Alarm Auto Top Up Kit is compatible with most aquariums. It works with various tank setups, whether for freshwater, saltwater, or reef tanks, as long as the required space and water source are available.
How does a Fish Tank Auto Refill Pump contribute to tank stability?
A Fish Tank Auto Refill Pump helps ensure that the water level stays stable, preventing issues caused by fluctuations. This stability is key for maintaining optimal conditions for fish, plants, and invertebrates.
Does an Aquarium Alarm Auto Top Up Kit affect water temperature?
An Aquarium Alarm Auto Top Up Kit doesn't affect water temperature directly. However, by preventing evaporation, it helps maintain consistent temperature levels, which is important for keeping your aquarium’s environment stable.
Is a Fish Tank Auto Refill Pump helpful for large aquariums?
Yes, a Fish Tank Auto Refill Pump is particularly beneficial for large aquariums where maintaining water levels can be time-consuming. It ensures consistent water levels, even for larger setups with higher evaporation rates.
How does an Aquarium Alarm Auto Top Up Kit save time on maintenance?
An Aquarium Alarm Auto Top Up Kit saves time by automating the process of topping up water levels. It removes the need for frequent manual refilling, allowing you to focus on other aspects of aquarium care.
Can a Fish Tank Alarm be integrated with other aquarium equipment?
Yes, a Fish Tank Alarm can often be integrated with other equipment, such as filtration or temperature control systems. Many models feature smart functionality, allowing you to monitor and manage your aquarium through apps or centralised controls.
Does a Fish Tank Auto Refill Pump require a water source?
Yes, a Fish Tank Auto Refill Pump needs a connected water source, such as a reservoir or tap. The pump automatically replenishes your tank by drawing from the water source when the level drops, ensuring your tank stays filled.
Is an Aquarium Alarm Auto Top Up Kit suitable for saltwater tanks?
Absolutely. An Aquarium Alarm Auto Top Up Kit is ideal for both freshwater and saltwater tanks. It helps maintain water levels in marine aquariums, preventing fluctuations that could affect the salinity or water quality.
Can a Fish Tank Alarm prevent overflow issues?
Yes, a Fish Tank Alarm alerts you if the water level rises too high, helping you prevent overflow. It ensures that your tank doesn’t exceed its capacity, preventing potential messes or equipment damage.
How does a Fish Tank Auto Refill Pump help with water quality?
A Fish Tank Auto Refill Pump helps maintain the water level and ensures that evaporation does not concentrate harmful chemicals in the tank. By constantly maintaining a healthy water level, it contributes to stable water conditions.
Is an Aquarium Alarm Auto Top Up Kit easy to install?
Yes, an Aquarium Alarm Auto Top Up Kit is simple to install. It typically connects to a water reservoir and is easy to set up without requiring professional assistance, making it user-friendly for both beginners and experienced aquarium owners.
How does a Fish Tank Alarm work to protect my aquarium?
A Fish Tank Alarm alerts you if the water level drops too low or if there’s an issue with the filtration or pump system. It ensures your fish are safe by notifying you of any potential issues before they become critical.
Can a Fish Tank Auto Refill Pump prevent water evaporation problems?
Yes, a Fish Tank Auto Refill Pump automatically detects low water levels and refills your tank. This prevents evaporation from negatively affecting water quality, keeping your fish happy and your tank environment stable.
What is an Aquarium Alarm Auto Top Up Kit used for?
An Aquarium Alarm Auto Top Up Kit automatically adds water to your tank when levels drop due to evaporation. This ensures your aquarium maintains a consistent water level, keeping fish healthy and maintaining water parameters.
The complete guide
Buying Guide
6 min readPet Supply Company
When the water level reaches B (the second monitoring probe), the automatic refill will be suspended.
Product Description
Specifications:
DC: 12V 5W
H.max: 2M | 6.5FT
Q.max: 74 GPH
Package Dimensions : 20.2 x 13.3 x 9 cm | 7.95 x 5.24 x 3.54 inches
DUE TO CURRENT DEMAND PLEASE ALLOW 5-7 DAYS DELIVERY
Every product page lists the measurement that decides it. Tell us the space you are working with and we will tell you straight whether this is the right thing for it. Free New Zealand wide delivery on orders over $75.
Aquarium Alarm Auto Top Up Kit sold by Pet Supply Company New Zealand at $249 NZD. Line length: 177.8cm | 70in. Package Weight: 0.56 kg | 1.23 pounds. Best Aquarium Alarm Auto Top Up Kit: Ensuring Stable Water Levels for Healthy Fish. Salinity Spikes: As water evaporates, salts concentrate, stressing fish and invertebrates. Free delivery New Zealand wide on orders over $75. Dispatch in 24 to 48 hours, delivery in 5 to 7 days.