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Description
STENNER FEEDER 45 M ACID - 45MJL2A1SThe Stenner 45MJL2A1S Acid Feeder delivers the precision and reliability pool contractors need for professional chemical dosing systems. This single head peristaltic pump provides accurate acid injection with 2% reproducibility, making it the trusted choice for pool construction, service, and commercial installations requiring consistent water chemistry management. Professional Pool Application Benefits Designed for continuous duty operation, this
The Stenner 45MJL2A1S Acid Feeder delivers the precision and reliability pool contractors need for professional chemical dosing systems. This single head peristaltic pump provides accurate acid injection with ±2% reproducibility, making it the trusted choice for pool construction, service, and commercial installations requiring consistent water chemistry management.
Professional Pool Application Benefits
Designed for continuous duty operation, this pump eliminates the guesswork in acid dosing with adjustable output control from 5%-100% in precise 2.5% increments. The self-priming design runs dry without damage and handles off-gassing solutions without losing prime, reducing service callbacks and protecting your professional reputation. Multiple voltage options (120V-250V) ensure compatibility with any commercial installation.
Why Pool Contractors Choose MT Pools
MT Pools understands the demands of professional pool contractors. Our superior customer service includes technical support for proper pump sizing and installation guidance. With our B2B wholesale pricing and reliable inventory, you can confidently bid projects knowing your equipment costs and delivery schedules are secure.
Frequently Asked Questions
What chemicals is the Stenner 45MJL2A1S compatible with?
The pump is compatible with a variety of pool chemicals including muriatic acid, sodium hypochlorite, and other water treatment chemicals. The FDA-approved Santoprene® tubing ensures chemical compatibility and safety.
Can this pump handle outdoor pool installations?
Yes, the pump is suitable for outdoor use when paired with the Stenner Rain Roof (MP90000). The durable polycarbonate housing withstands harsh pool environments.
What is the maximum suction lift for this pump?
The Stenner 45MJL2A1S provides up to 25 feet of vertical suction lift, making it ideal for installations where chemical storage is located below the pump level.
Does MT Pools offer technical support for pump installation?
Yes, MT Pools provides comprehensive technical support including pump sizing guidance, installation assistance, and troubleshooting support to ensure successful contractor installations.
Order Your Stenner Acid Feeder Today
Join thousands of pool contractors who trust MT Pools for their chemical dosing equipment needs. Our expert team is ready to help you select the right pump configuration and provide the superior service that keeps your projects on schedule.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 338 reviews
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Product Reviews
★★★★★ 5
Best Watch Ever Made
I am a watch collector. I have about 50 watches - of all different sorts: automatic, quartz, analog, digital, high-end (luxury - like omega) and low-end (timex).
This watch is hands-down the best watch in my collection. Sure I wouldn’t wear it with a suit. But in literally every other occasion this watch is perfect. It’s always accurate to the second - you never have to set it. And it syncs really well with atomic time (here in the US and in the UK from my experience). Also the world time feature is perfect when traveling - simply push the top two buttons in world time mode to switch the new time zone to your current time zone.
Its button configuration is perfect compared to other digital watches. And the battery will last basically indefinitely. Perhaps you might need to add a new solar powered watch battery replacement once in your lifetime if the battery stops taking any charge.
The stopwatch and timer are useful for me daily. And the hourly signal on the alarm mode is great when you want to be more mindful of the time.
Sure Casio makes other similarly functioned watches that are just as fun. But I think where this reigns supreme over those is its classic design, perfect functionality and button layout, and its size. And it beats a smart watch in terms of battery life, durability, and reliability. I promise you won’t dislike this watch - unless you think the design is ugly… which I understand if you do. But give it a chance and you might discover the joy and security this watch gives me.
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Reviewed in the United States on April 25, 2025
★★★★★ 5
Perhaps the Perfect Digital Watch
This is perhaps as close to a perfect digital watch as you can get. Besides the toughness of a G=Shock, it's got all the daily features one may need (alarm - which you can set up to 5, stopwatch and countdown timer). It also has world time, which is a nice feature to have when travelling. When in stop watch and time modes, the current time is displayed in the upper right corner of the display where the date normally is. It's solar powered, and the display shows how much power the watch has. Multi-band 6 is another feature, so it automatically sets the time once it receives a signal from an atomic clock transmitter. YMMV with this feature though. I have difficulty receiving the signal being on the U.S. east coast (the transmitter is in Colorado). There are phone apps you can use to strengthen the signal if normal reception fails. Despite this, it can be manually set if needed.
Visibility of the display is an upgrade over the DW-5600. It's more clear, and more visible at different viewing angles. The standard backlight is now LED instead of the classic electroluminescence. Some prefer the latter. This may or may not be a deal breaker based on personal preference, but considering what this watch has to offer, it should only be a consideration in the bigger picture.
The watch offers a great fit for G-Shock. With its slim profile, it lacks the bulk of many of the other G-Shock models out there. It's very comfortable to wear on different size wrists, though the strap may not be everyone's cup of tea.
The design is very much retro, harkening back to the 1983 original square with the red border.
For the price of this watch, it really is a great value. It's also possibly the only digital watch you'll ever need unless you want other functions like tides, barometers, etc. In my collection, this watch is one of my favorites. There's a good chance it will become one of yours too.
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Reviewed in the United States on February 18, 2024
★★★★★ 5
Most practical watch
I'm a watch collector and I enjoy classic men's watches. One thing that I can't stand is that no matter where you turn around you always see bunch of people with the same exact smart watch of a certain brand on their wrists. So boring. So cliche. So annoying. As the phones aren't enough. Anyway, excluding this Casio that I bought last year out of nostalgia, I have 6 other watches with combined value of $30K: a Sea Dweller, a Seamaster, an Aquaracer, a Seiko Cpt Willard, a Seiko Arnie and a Citizen Nighthawk. Yet I wear this cheap $100 Casio most of the time - when I'm outdoors, when I'm at home, in a pool ..... - Virtually 90% of the the time and situations that don't warrant wearing a luxury/dressy watch. That says enough how much I like this retro looking G-Shock! It's by far the most practical watch I have and it has all the features you would want in an EDC watch: toughness, solar power, waterproof, alarm, timer, date, light, multiple times zones...
I highly recommend it for men of all ages, backgrounds and lines of work.
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Reviewed in the United States on January 16, 2026
★★★★★ 4
The perfect "set it and forget it" watch
I finally decided to swap my smartwatch for something simpler, and honestly, I couldn't be happier with this G-Shock.
The best part is definitely the zero maintenance aspect. Since it's solar powered, I don't have to worry about charging it or swapping batteries. It also has Multiband 6, which basically means it syncs with atomic clocks every night (assuming you're in range of the broadcast tower and have good signal). It is literally never off by even a second. If you’re someone who values total accuracy but wants to go a bit more analog, this is definitely the one.
It’s as rugged as you’d expect. I’ve already taken it to a water park and beat it around quite a bit, but it still looks brand new. It’s nice having something on my wrist that I don't have to baby or worry about scratching.
The only real downside is that the buttons are pretty recessed, so they can be a bit of a pain to press. You kind of have to use your fingernail to get them to click. It’s a small trade-off for the durability, but worth mentioning if you have bigger hands.
Overall, if you want a bulletproof watch that’s always accurate and never needs a charge, you can’t really beat this classic.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Fits ,Great.
Got this watch in the mail today. Fit's great on my wrist and tough solar. Never needs a battery.Looks like my Dw5600e-1v.I like the face of the watch a little better has more on it to look at and a nice red line around the end of the face.New update 1 year To day.l got it on June 5, 2015.Now one year later it still works like the day l got it.l wear it to work, swimming, bike riding, cutting. The.lawn.you name this watch is perfect for anyone. Thanks Amazon.UPDATE ) JUNE 5TH 2017 . I NOW HAVE HAD THIS FOR 2 YEARS. I GOT THIS WATCH IN THE MAIL TODAY 2 YEARS AGO. I'M NOW A BIG GSHOCK COLLECTOR. I HAVE BEEN WEARING GSHOCKS FOR ALMOST 34 YEARS. I HAVE 35 GSHOCK WATCHES AND 5 PROTREK WATCHES .I HAVE 2 RANGEMAN GSHOCK WATCHES. THE GWX 56-1BJF KING GSHOCK. THE GSTEEL SMOKE DIAL GSHOCK. I HAVE THE FROGMAN GWF 1000-1 GSHOCK 4 MUDMAN GSHOCK WATCHES 2 GULFMAN GSHOCKS. AND THE GW7900-1 AND THE G7900-1 GSHOCK. I ALSO HAVE THE DW5600E-1 FOXFIRE. AND THE DW5600-1V GSHOCK AND WAY TO MANY MORE TO MENTION. I LOVE ALL GSHOCKS BIG OR SMALL. I USE THIS WATCH WHEN I GO TO THE GYM. I WEAR IT AT NIGHT WHEN I WATCH TV. I LOVE THIS WATCH. I HAVE A 7 INCH WRIST AND IT FITS GREAT. THE WATCH IS VERY DURABLE. I HAVE SO MANY GSHOCKS. IF I COULD ONLY KEEP ONE WATCH IT WOULD BE THE RANGEMAN GSHOCK. THAT WATCH CAN DO ALMOST ANYTHING . THIS IS MY SECOND FAVORITE. IF YOU LIKE A SMALLER GSHOCK THIS IS PERFECT. TAKE IT FROM A GSHOCK COLLECTOR. THIS WATCH IS A GREAT DURABLE WATCH. YOU WON'T FIND A BETTER DIGITIAL WATCH FOR THE PRICE. THIS LOOKS JUST LIKE THE FIRST GSHOCK TO HIT THE MARKET BACK IN 1983. SOLAR ATOMIC GSHOCK THE GWM5610-1 IS WITH WORLD TIME, COUNT DOWN TIMER. AND STOP WATCH. THE BEST PART ABOUT OWNING THIS WATCH IS SET ONCE AND NEVER HAVE TO SET IT AGAIN. JUST LIKE ALL CASIO GSHOCK SOLAR ATOMIC WATCHES. ENJOY THIS OR ANY OTHER GSHOCK YOU BUY. REMEMBER THAT THE BEST WATCH IS THE ONE THAT FITS YOUR STYLE. ENJOY THIS WATCH OR ANY OTHER GSHOCK WATCH YOU BUY.UPDATE SATURDAY SEPTEMBER 9TH 2017.I BOUGHT ANOTHER GWM5610-1 GSHOCK. I BOUGHT THIS FOR $90.00 ON AMAZON. I NOW HAVE 2 OF THESE WATCHES. I HAVE 37 GSHOCK WATCHES AND 7 CASIO PROTREK WATCHES. I LOVE THIS WATCH SO MUCH FOR A S GSHOCK. THIS LOOKS LIKE THE ORIGINAL DW500 GSHOCK THAT I HAD BACK IN 1983. I HAVE BEEN WEARING GSHOCKS FOR 34 YEAR'S. THIS WATCH IS ONE OF MY FAVORITE WATCHES. BECAUSE IT IS VERY DURABLE AND COMPFORTABLE. THIS IS MY FAVORITE FOR SO MANY REASONS. .BECAUSE IT IS LIGHT ON YOUR WRIST. SET ONCE AND NEVER HAVE TO SET IT AGAIN. OUT OF THE 37 GSHOCK. I OWN. THIS WOULD BE MY SECOND FAVORITE. MY FAVORITE IS THE RANGEMAN GSHOCK. I HAVE 2 OF THEM TO. GOOD LUCK ON ANY GSHOCK WATCH YOU BUY. THIS IS A GREAT LITTLE WATCH THAT'S TOUGH AS ANY OTHER GSHOCK WATCH. LOVE IT. GSHOCKS ROCK.
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Reviewed in the United States on June 5, 2015