If you are an avid aquarist, then you are aware of the fact that a reef tank requires far more dedication and labor in its maintenance than a regular aquarium.

To maintain a pleasant, healthy environment inside the aquarium, you need to check various factors such as the pH levels, LUX, and par levels inside the tank.

The naked eye can never accurately estimate the varying degrees of nutrients and chemicals. Hence, your best bet is to opt for an aquarium monitor to keep any pesky upheavals in check before it ruins your precious tank!

In this article, we present the Seneye Reef Aquarium Monitor, which detects all the factors mentioned above. It is a convenient addition to your aquarium-kit as it will help you determine the changes you need to make. It is better to be safe than sorry!

Seneye Reef Review

Things to consider before buying

Here are a few essential factors that you need to take into consideration before you decide to buy the monitor.

Not a controller

If you are looking for a gadget that can both control and measure the quality of the aquarium tank, then this may not be the product for you. This device is only a submersible monitor that measures the various parameters of your tank and relays the information onto your PC or laptop.

Requires USB cable

For displaying the information, this device needs a USB cable to connect the sensor to your computer. However, this may be inconvenient to some of the users because the laptop has to remain by the tank while the readings are being transferred.


To solve this, you can purchase the Seneye Web Server; it directly connects the monitor to any of your active devices such as a tablet, PC, or laptop via Wi-Fi. After this purchase, you don’t need to use a USB cable to transfer data.

Requires replaceable test slides

Unlike other measuring devices or probes, this product requires separate disposable test slides for checking the pH levels and the quantity of free ammonia in the water.

When you insert a new slide into the monitor, you need to immerse it in diluted water beforehand for a day or two. Each slide bears a code that has to be registered with the official website of the product. This way, all the readings are processed and recorded in the Seneye cloud accordingly.

The slide has to be replaced after 30 days. With each slide, you can get about 5600 readings.

Presenting The SENEYE Reef Aquarium Monitor and Par Meter

The Seneye Reef Aquarium Monitor is a smart monitoring gadget that is necessary for keeping your corals vibrant and fishes healthy. It calibrates multiple aspects of the tank, such as the lighting, ammonia, temperature, and pH levels. Learn more about the critical and non critical water parameters of a reef tank from this article.

The gadget consists of two essential components, namely, the sensor and a USB cord. You need to submerge the sensor into the aquarium when you take the readings. Moreover, you can attach it to the inner walls of the tank with the help of the suction cups present on the sensor.

The sensor itself can measure all that parameters except the pH and ammonia levels. For this, it needs extra disposable slides for measurements.


  • iOS and Android user-friendly
  • Accurately records the data
  • Can immerse in water
  • Cloud sync option available


  • Not a controller
  • Needs a USB cable for connection
  • Requires replaceable slides for pH and ammonia measurements

Seneye Reef Review: Features and Benefits

Ammonia Levels

Of all the minerals in the tank, ammonia is rarely taken in to account by most of the measuring devices. This compound is tough to measure (the free ammonia) in the water, and at the same time, the readings may be unreliable.

However, this gadget can accurately measure ammonia levels with the proper attachments. Ammonia is a toxic compound that can cause the tank to fail if it is allowed to exceed beyond its limits.

This device is capable of measuring the ammonia levels between the range of 0.001 and 0.5 parts per million (ppm) with the help of disposable slides.

One of the convenient features of using the test slides is that it eliminates the need to purchase extra calibration fluid.

pH Levels of Water

Apart from monitoring the pH levels in the tank, this particular feature of the sensor can come in handy when you are introducing a new fish into the tank.

Different species of fishes thrive at various pH levels. So, if you are planning to include a new member into your tank, you can first check the pH level that is comfortable for the fish separately.

Later, you can get it habituated to the tank water by adjusting the levels accordingly.

Provides Constant and Accurate Readings

When you connect the sensor to your laptop or computer via cable, it simultaneously transfers the data to your laptop. Afterward, it is processed and saved in the cloud.

You can easily view the readings on the dashboard. In addition to this, each factor has its widgets, which shows the readings individually.

Also, you can view the entire history of the data that has been collected by the sensor along with their specifications on the dashboard.

Alerts via text messages

The sensor measures the tank water on an hourly basis. Once the parameters of all the readings have been set, the sensor monitors them and sends you a notification via text on your phone if any of the readings seem unusual.

This feature comes in handy when you’re traveling and cannot constantly keep an eye out for your aquarium.

Monitors LUX, PAR and Kelvin

Most of the aquariums require a thermal heater to keep the tank water warm. However, if the heater malfunctions, especially in the case of a submersible one, this can be very harmful to the fishes.

This sensor quickly detects the change and notifies it to you instantly.

In the same way, the sensor detects the Photosynthetically Active Radiation (PAR), which informs you whether the lighting within the tank is sufficient for the health of the corals. Also, it takes the LUX and the Kelvin readings and projects them on a graph.


Although a fully functional tank has a balanced level of substances, it is better to be safe than sorry. Having a device that can measure all the variants in the tank helps you maintain your tank easily and efficiently is necessary.

In this Seneye Reef review, we carefully took into account all the necessary details you will need before making the purchase. This device can swiftly inform you in case of an anomaly.

You don’t have to stay glued to your aquarium because the monitor can alert via texts and notifications. Therefore, if you love your little fishes and corals, getting this device could be useful.

Click here to check the price on Amazon.

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