ajaj137
New Member
So how did you mix it, did you just put one powder packet into the bag and 5mls from the supplement?
Kamoer Reef Master SPA multiparameter
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alabella1
Valuable Member
Sounds like this isn't working well. My reefbot lab has been working very well for the past few years. That said, a guy i know mentioned in a Facebook group that he is testing another tester from Kamoer called the PM-20. Sent this picture of it...
Broward Reefer
New Member
Hi. I’m the person mentioned above. Who ordered the new PM-20. I believe it’s the first US English version. I ordered it to cross check, and because I saw reviews in China were extremely high on it amongst reefers.
I also do run the reef master spa for 12 months. In my opinion it’s a great device. It does have some learning to it. You need to know when to clean tubes etc. I’ll post a YouTube video soon and share what issues I encountered. I wouldn’t call the device for everyone. You do still need to maintain it like everything in this hobby
I also do run the reef master spa for 12 months. In my opinion it’s a great device. It does have some learning to it. You need to know when to clean tubes etc. I’ll post a YouTube video soon and share what issues I encountered. I wouldn’t call the device for everyone. You do still need to maintain it like everything in this hobby
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Broward Reefer
New Member
For the person who asked how to mix the nitrate.
It’s 5ml of supplement liquid, and one packet of powder. Then shake for 1 minute.
You need to click on that reagent in the app NO2/NO3 A, and select “add powder”. This will reset the time to 15 days. And every 15 days the app will notify you to add supplement.
every 15 days once you get the alert, it’s 5ml of supplement liquid, and one powder of packet. Also if you nitrate test is taking much longer than normal, you can add it early.
Or if you’re leaving in vacation in 4 days, and don’t need to add for 8 days. You can add it early. To have 15 days of the nitrate reagent testing.
For those who don’t have the device. The reagent for nitrate requires mixing a powder and liquid every 15 days. I would call this a con of the device. But it does read accurately so I deal with it. The other reagents don’t require this step every 15 days. So how did you mix it, did you just put one powder packet into the bag and 5mls from the supplement?
It’s 5ml of supplement liquid, and one packet of powder. Then shake for 1 minute.
You need to click on that reagent in the app NO2/NO3 A, and select “add powder”. This will reset the time to 15 days. And every 15 days the app will notify you to add supplement.
every 15 days once you get the alert, it’s 5ml of supplement liquid, and one powder of packet. Also if you nitrate test is taking much longer than normal, you can add it early.
Or if you’re leaving in vacation in 4 days, and don’t need to add for 8 days. You can add it early. To have 15 days of the nitrate reagent testing.
For those who don’t have the device. The reagent for nitrate requires mixing a powder and liquid every 15 days. I would call this a con of the device. But it does read accurately so I deal with it. The other reagents don’t require this step every 15 days. So how did you mix it, did you just put one powder packet into the bag and 5mls from the supplement?
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Broward Reefer
New Member
My 12-Month Experience With the Kamoer ReefMaster SPA
Figured I’d finally put my thoughts down after running the ReefMaster SPA for a bit over a year. I originally ordered mine December 2024 and received it January 2025. Since then it has been running continuously. I also had a friend try one — it was a little too much for him, but for me it’s been very solid once I understood how it wants to be cared for.
The First Two Months (Smoothest Part)
In the first ~60 days the machine is an absolute joy. Phosphate, nitrate, Ca, Mg, and Alk all came back dead-on. I cross-checked with Hanna and Salifert early and it was shockingly precise. This is the closest I’ve personally seen to true “lab-grade” reef testing in a home environment.
The Phosphate Drift (Month 3+)
The only real quirk: after ~2 months phosphate starts to read low. Example: it might show 0.06ppm but the real reading is closer to 0.1ppm. My first instinct was calibration — turns out it wasn’t that at all.
If you open the side panel and clean/replace the small tubing sections, phosphate snaps right back to accurate immediately. Over 12 months, I have never calibrated once. Cleaning the tubing every ~2 months solves the issue on its own.
Personally I just bought ~10 feet of replacement tubing (cheap) and swap it every couple months instead of scrubbing. Total time: 5–10 minutes.
Do Not Hide This Unit in a Cabinet
If you install this in a closed cabinet where you can’t access it, you’re going to hate life. It needs to live somewhere accessible so you can:
This is not a “set and forget for a year” device — not yet at least — but the upkeep is predictable and minor.
Test-Only Mode vs. Auto-Balance
For the first 2 months I only used it for testing. I was honestly nervous to turn on the automatic balancing/dosing feature. After playing with the safety settings I finally enabled it, and that’s how it’s been running ever since.
The safety options are very smart and customizable. Examples:
These limits are the reason I felt comfortable allowing it to self-adjust. My tank has been fine the entire time.
Impact on Coral Health:
Even when phosphate begins drifting because the tubing needs cleaning, it’s a small drift, not catastrophic or “tank crash” territory. Corals have stayed happy and I’ve never seen major swings from it.
Error Codes & Support
One thing I’ll give them credit for: any error code that pops up inside the app has a linked video showing exactly what tubing to clean or what step to take. I never had an error I couldn’t fix myself within a couple minutes.
Who Should Buy This (in my opinion)
If you think you’re going to:
plug it in → ignore it → and have perfect numbers
you’re going to be disappointed. We aren’t at that stage in reef automation yet.
If you’re willing to learn the unit, keep it accessible, and clean the tubing every couple months, then it’s honestly one of the most impressive pieces of reef tech I’ve used. I still have mine running over 12 months later, and I have zero plans to remove it. On the contrary I ended up installing their Qijian 3, being so impressed with Kamoer.
Final Thoughts
Compared to everything else on the market right now, this is the closest thing to “automated reef chemistry” I’ve personally seen. It’s not for every reefer — but it’s great for the ones willing to understand it.
I’ll be filming a short YouTube video next week showing how I open the unit, clean the reaction vessel, and replace the tubing. I think visually it’s easier to appreciate how simple the maintenance actually is.
If anyone’s curious about a certain aspect just ask — happy to answer questions now that I’ve lived with it for a full year.
Figured I’d finally put my thoughts down after running the ReefMaster SPA for a bit over a year. I originally ordered mine December 2024 and received it January 2025. Since then it has been running continuously. I also had a friend try one — it was a little too much for him, but for me it’s been very solid once I understood how it wants to be cared for.
The First Two Months (Smoothest Part)
In the first ~60 days the machine is an absolute joy. Phosphate, nitrate, Ca, Mg, and Alk all came back dead-on. I cross-checked with Hanna and Salifert early and it was shockingly precise. This is the closest I’ve personally seen to true “lab-grade” reef testing in a home environment.
The Phosphate Drift (Month 3+)
The only real quirk: after ~2 months phosphate starts to read low. Example: it might show 0.06ppm but the real reading is closer to 0.1ppm. My first instinct was calibration — turns out it wasn’t that at all.
If you open the side panel and clean/replace the small tubing sections, phosphate snaps right back to accurate immediately. Over 12 months, I have never calibrated once. Cleaning the tubing every ~2 months solves the issue on its own.
Personally I just bought ~10 feet of replacement tubing (cheap) and swap it every couple months instead of scrubbing. Total time: 5–10 minutes.
Do Not Hide This Unit in a Cabinet
If you install this in a closed cabinet where you can’t access it, you’re going to hate life. It needs to live somewhere accessible so you can:
- pop the side panels off
- clean the tubing
- clean the reaction vessel (I literally use a Q-tip inside the vessel)
This is not a “set and forget for a year” device — not yet at least — but the upkeep is predictable and minor.
Test-Only Mode vs. Auto-Balance
For the first 2 months I only used it for testing. I was honestly nervous to turn on the automatic balancing/dosing feature. After playing with the safety settings I finally enabled it, and that’s how it’s been running ever since.
The safety options are very smart and customizable. Examples:
- If Alk change exceeds X dKH → retest
- Maximum dose allowed per day
- Maximum correction per test cycle
These limits are the reason I felt comfortable allowing it to self-adjust. My tank has been fine the entire time.
Impact on Coral Health:
Even when phosphate begins drifting because the tubing needs cleaning, it’s a small drift, not catastrophic or “tank crash” territory. Corals have stayed happy and I’ve never seen major swings from it.
Error Codes & Support
One thing I’ll give them credit for: any error code that pops up inside the app has a linked video showing exactly what tubing to clean or what step to take. I never had an error I couldn’t fix myself within a couple minutes.
Who Should Buy This (in my opinion)
If you think you’re going to:
plug it in → ignore it → and have perfect numbers
you’re going to be disappointed. We aren’t at that stage in reef automation yet.
If you’re willing to learn the unit, keep it accessible, and clean the tubing every couple months, then it’s honestly one of the most impressive pieces of reef tech I’ve used. I still have mine running over 12 months later, and I have zero plans to remove it. On the contrary I ended up installing their Qijian 3, being so impressed with Kamoer.
Final Thoughts
Compared to everything else on the market right now, this is the closest thing to “automated reef chemistry” I’ve personally seen. It’s not for every reefer — but it’s great for the ones willing to understand it.
I’ll be filming a short YouTube video next week showing how I open the unit, clean the reaction vessel, and replace the tubing. I think visually it’s easier to appreciate how simple the maintenance actually is.
If anyone’s curious about a certain aspect just ask — happy to answer questions now that I’ve lived with it for a full year.
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Otago
New Member
Is there a link to this ? I can't see it anywhere on google. Is it the same as the hanna marine master, one parameter per test with manual reagent ?Sounds like this isn't working well. My reefbot lab has been working very well for the past few years. That said, a guy i know mentioned in a Facebook group that he is testing another tester from Kamoer called the PM-20. Sent this picture of it...
Thisisfine
Active Member
It's been a bit since your post, but can you let me know where you get your replacement tubing? I set up a reefmaster a few months back but only test intermittently as I'm getting the tank back to normal levels. I've noticed the nitrate and phosphate tests take longer and longer so I want to replace the tubing to see if that's part of the issue.
Thisisfine
Active Member
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