We currently free ship to the most European and American countries, please check the shipping page.

For customers who are not in any of these countries but would like to purchase our products, please contact us to inquire about delivery and shipping fees.

Please email us at services@kactoily.com

It usually arrives within 7–15 working days.

Shipments usually take 1–3 working days.

All shipping is now free for most countries on all products.

For customers who are not in any of these countries but would like to purchase our products, please contact us to inquire about delivery and shipping fees.

Please email us at services@kactoily.com

Unfortunately, we only ship to some some countries by now.

However, we are also considering shipping it worldwide, so please follow our social media accounts for updates.

And let us know which countries you would like us to open up for shipping on Instagram, Facebook or our email address.

We ship from our partnered warehouses in the United States and China.

You could apply your discount code by entering it on the checkout page.

The monitor does not need to be connected to the application. It can be used directly after a simple installation according to the user manual. 

It is ready for use once it has been installed and calibrated according to the instruction manual.

There are three grades of probes on the market, consumer grade, industrial grade and scientific grade.

Most of the probes are consumer grade and cannot be left in water for long periods of time. Kactoily probes are industrial grade made by platinum, so they have a longer lifespan and higher accuracy, and can be placed in water for a long time. 

The depth of the probe into the water needs to be placed between the highest and lowest water levels.

Not at all!

We use high-frequency forward and reverse pulses that don't send an electric current into the water.

It means that the display and probe have been disconnected.

In this case, the display cannot receive data from the probe due to the distance. Please shorten the distance between the display and the probe.

• Restore the monitor to factory settings while keeping the display power on during the restoration process.
• Power off the probe, then power it on again to complete the connection.

We recommend you calibrate the monitor before use. 

Please refer to the manual for specific calibration steps. After that, it is recommended to calibrate it every six months, because any tester will produce errors during long-term use.

Please click “Reset” to restore factory settings and re-calibrate.

First, check the following conditions:

1. Have you removed the protective cap from the probe?

2. Whether the connecting wire is tightened.

3. Restore factory settings.

4. Recalibration with calibration solutions.

Don't hesitate to get in touch with us if the monitor still won't normalize after excluding the above conditions: services@kactoily.com.

It is highly likely that the probe was placed in an area where water flow fluctuates significantly.

It is best to place the probe in an area where there is a relatively stable flow of water.

To verify whether the salinity instability is caused by the placement:

Take out part of the fish tank water, and place the probe in it for two days to see if the salinity changes significantly.

Water is dropped onto the lens during optical measurement to see the refractive index.

At this time, the water in the lens is still, and the water temperature is close to the temperature of the lens (or air temperature).

Most people will optically measure the local salinity at a point in time to be used as the average salinity of the aquarium, this method is called a sampling test to provide feedback on the overall salinity.

But in fact, the concentration of seawater is not ideally uniform, and the environment of organisms in seawater is also uneven.

As long as there is water flow and temperature changes, the environment they live in is dynamic. Therefore, optical testing cannot directly feed back the average salinity of seawater, but only the local salinity at a specific moment.

The electronic measuring equipment, like our monitor, in essence, measures the strength (concentration) of conductive ions around the two electrodes and focuses on feeding back the dynamic changes in the living environment of aquatic organisms.

The meaning and results of the measurement are naturally different.

It's completely normal!

In daily use, REDOX requires a certain amount of oxidation time, generally takes more than a week.

The ORP of the new monitor is usually under 100 when it is first used, so the value displayed by your monitor is a normal fluctuation.

Please be patient and use it for more than one week. 

3 Situations that can lead to negative ORP:

1. The cord isn't plugged in tightly.
2. Unstable power supply.
3. There's a foreign object inside the probe.

First of all, we have a one-year warranty.

With a split sensor and display design, if the probe breaks, you can replace it instead of replacing the whole monitor.

Soak the probe in the diluted disinfectant or Potassium Chloride Saturated solution overnight (be careful not to exceed the maximum water level).

The probe should be soaked for 12 hours in Potassium Chloride Saturated solution or a disinfectant solution diluted 1:15 with disinfectant and water.

Please note that the soaking depth should not exceed the maximum water level.

Consider using a chlorine-containing disinfectant whose main component is NaClO, with a concentration of about 6%.

Not at all.

The white marks are from the probe protective solution, as we added a special protective solution to the probe part to protect it. 

The protective solution is saturated, volatile, and easy to crystallize. Once the solution has overflowed and volatilized, it appears as white crystals that can be used after washing.

• Incorrect use, such as immersing the probe beyond the highest water level resulting in inaccurate measurement.
• Water is too dirty, causing probe blockages and damage.
• Incorrect storage, let the probe be exposed to the air for a long time without water and the protection cap.
• The use time has reached the service life of the probe.
• Break violently.

It depends on how you use it. It can even last for 2-3 years if you take care of it and maintain it regularly.

If the probe is in a too-dirty environment and you don't clean it regularly, it will affect its life.

Also please make sure that don't let the water go above the maximum water level line.