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Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in 1-7 business days after it ships out. Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Our $2.99 flat rate shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for $2.99 flat rate shipping.
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The first expansion module, the PM1, with a pH or ORP, temperature, and 6 digital inputs.
4 in 1 goodness with this module!
The PM1 probe module is just what you need if you want to monitor pH or ORP in your tank. And, there is an added bonus, you get an extra temperature port as well as six I/O switch inputs for use on ATO, feed buttons, leak alarms or whatever else you may come up with. (I/O Break Out Box required).
This module is perfect for someone that wants to add an additional pH or ORP port to their Apex System.
Great uses for the extra ports
If this is an additional pH port, it could be used for another tank or for control of the CO2 solenoid on your calcium reactor.
If you choose to use it for ORP, you could have the Apex use that ORP value to turn on and off an ozone generator.
Of course, you could set up audible or email alerts too if these values should fall out of range.
Extra Temperature port
Having an extra temperature port and probe is always useful. Some people like to put one probe in the display tank and one in the sump just for redundancy. That way, should your return pump go out, you would be monitoring the display tank and would see the temperature falling and know something was not right.
Want to monitor an additional tank?
With the PM1 you can easily use your existing Apex to monitor additional tanks simply buy adding this module. Then, just buy our pH and Temperature probes and you’ll be all set!
Six I/O Switch Ports
Purchase the optional I/O Breakout Box and you can monitor the off/on state of six I/O signals. This is useful if you want to set up an ATO (Auto Top Off), a feed button, or even a sump door alarm or light switch.
Features:
Monitor/Control pH or ORP, and temperature.
6 digital inputs for float switches, water on floor sensors, pressure sensors, etc. (I/O Break Out Box required)
Full datalogging support in Apex Base module.
Up to 240 AquaBus modules can be added to the Apex and Apex Lite system (5 for Apex Jr).
Plug and Play. Automatically recognized when installed into the system.
Two AquaBus connectors for flexible expansion via AquaBus
Led Status Indicator
Upgradeable firmware.
Compatible with Apex, Apex Lite and Apex Jr. systems.
Galvanic Isolation for accurate and reliable probe readings.
Neptune Systems Aquarium Supplies Neptune Systems is one of the world’s leading manufacturers of aquarium controllers. The company was founded in 1995 for the purpose of developing affordable water quality monitoring and control instrumentation. Their engineering team has extensive expertise in computer hardware and software system design as well as a background in water quality analysis. Neptune Systems uses these finely-honed engineering skills to develop innovative monitoring and control solutions for use in reef and fresh water aquariums, aquaculture tanks, hydroponics systems and general laboratory use. Neptune Systems is best known for their AquaController line. The company is known for their innovation and customer centricity.
Ask a Question Earn 15 Points when you answer a question
I own two of these modules that i use to monitor the pH of my calcium reactor and tank pH. I use the Double Junction probes for both. I run them off an Apex Jr. I swore up and down for years I would never waste money on a controller. ITS BEEN ONE OF THE BEST PURCHASES FOR MY REEF TANK! I love being ...Read More
I own two of these modules that i use to monitor the pH of my calcium reactor and tank pH. I use the Double Junction probes for both. I run them off an Apex Jr. I swore up and down for years I would never waste money on a controller. ITS BEEN ONE OF THE BEST PURCHASES FOR MY REEF TANK! I love being able to see the graphs of my tank parameters on the fusion website.Hide
I already have an established apex system on my main system. For Christmas my daughter begged me for her own tank in her room. So, Santa brought her a innovative marine Nuvo 8 (bought here).
It is setup as a fish only saltwater tank with live rock. I couldn't see myself going backwards with analog ...Read More
I already have an established apex system on my main system. For Christmas my daughter begged me for her own tank in her room. So, Santa brought her a innovative marine Nuvo 8 (bought here).
It is setup as a fish only saltwater tank with live rock. I couldn't see myself going backwards with analog or digital timers and I wasn't a fan of having another console with a full apex deployment. So, pm1 and a little snaking of a 100ft apex cable through my attic and presto. Full monitoring and control of my nano. Yeah I know it is overkill, but isn't most of the stuff we do with this hobby?Hide
I have been having issues with several corals in my reef tank for months now. They were only happy occasionally and I could not figure out exactly why. Come to find out I was unable to distinguish the colors on my pH test kit. After installing the PM1 With a pH probe it was obvious that I have chron...Read More
I have been having issues with several corals in my reef tank for months now. They were only happy occasionally and I could not figure out exactly why. Come to find out I was unable to distinguish the colors on my pH test kit. After installing the PM1 With a pH probe it was obvious that I have chronic low pH and that was causing my corals to not to thrive like they are now. After only 5 days it's amazing the difference now that I am keeping my PH where it should be. NOTE 2 other older guys: our eyes ain't what they used to be! I love this product and I wish I would have bought it months ago.Hide
Great product... Documentation was good, but it should have just told you to use the web interface to calibrate it...Don't forget to buy the actual probe you want to monitor... Customer Service did a nice job getting me squared away, after I forgot the probe.... :)
I recently added this unit to my Apex Jr. (I'm loving the Apex Jr. and I purchased it without the display). I was a bit concerned about the PM1 working with my setup when I first read the directions. It says in the directions that the PM1 cannot activate a pH probe in the web interface, which is ...Read More
I recently added this unit to my Apex Jr. (I'm loving the Apex Jr. and I purchased it without the display). I was a bit concerned about the PM1 working with my setup when I first read the directions. It says in the directions that the PM1 cannot activate a pH probe in the web interface, which is all I have! THAT IS NOT TRUE! I wrote Neptune systems and they assured me it could be done in the web interface and that you didn't need the Apex display unit. Sure enough I received my PM1 module, calibrated and activated the pH probe in the web interface and never needed the Apex display. I'm loving the unit and it is very helpful for me now to track on a graph in the Apex Jr. the daily fluctuations of my pH. Also it can adjust pH for temperature, though I haven't used that yet. Would definitely recommend to anyone that wants to track pH!! 4.5 stars because of the out of date instructions and because the unit requires that all probes be purchased separately.Hide
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in 1-7 business days after it ships out.
free shipping for orders $29+
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in 1-7 business days. Just spend $29 or more!
free faster shipping for orders $250+
Over 90% of shoppers receive their orders within 2 business using UPS Ground. Upgrade from free economy shipping to UPS Ground for only $2.99—or spend $250 and we’ll upgrade you automatically!
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Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
live plants, live foods, and frozen foods delivered to your door
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
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