Our Apex System is the best-value aquarium controller on the market today. Dollar for dollar you will not find a higher-quality monitoring and control system that gives you more features, is easier to use, or has a larger and more active user base than the Apex. If you haven’t done so already, please read our Why Apex? page to see why the Apex is so important for giving you the best chance of success and long-term health of your aquarium.


The Apex Gold adds salinity and ORP monitoring to the standard Apex giving nearly complete oversight on the health of your aquarium. Prevent over or under salinity conditions in your tank. Use ORP monitoring to spot ORP that is trending down – often a leading indicator to reduced water quality. Purchasing the Apex Gold is not only wise for what it can do for your aquarium, it also saves you at least $50 over buying these options separately at a later date.


The Apex Jr. System the perfect option for those that want to have the basic functions of a controller like light and temperature control but have a smaller budget. But the beauty of the Apex Jr. is that you don’t have to sacrifice many of the cool features of the more expensive Apex controllers such as Internet connectivity, phone and SMS alerts, over-temperature protection, mobile phone and tablet access and much more.


Apex Fusion is a free, cloud-based service that, when connected to your Apex AquaController, gives you a command center for your aquarium(s) from anywhere in the world. It works on nearly every device platform – computer, tablet, or smart phone – Windows, OSX, iOS, or Android. And the best part is you’ll never have to download an app – it’s always up to date with the latest features!

There is so much more to Apex Fusion than just looking at the parameters on your aquarium. Apex Fusion puts complete control of your entire aquarium and all of its systems right into your hands.


When you become part of the Neptune Systems community, you gain the confidence of knowing you are not alone. There are thousands of Apex users out there around the world and they all come together in one place to share ideas and help each other out. The Neptune Systems online community is a key component not only to the our customers being successful with their products, but successful with their aquariums as well.

People love telling us about their Apex Experience

. . . Apex’s are all set up on all tanks and man what a difference…Ya the cost was more but well worth it…Dashboard is easy, access fast, and turning things on and off is a breeze….Customer service is perfect…. So…..don’t try and save money and go for the cheaper unit…there is a reason why its cost less… I hope this helps anyone needing to make the decision on which one…Take my advise, APEX!
Reefgeek1, Santa Maria, CA
Just installed my new Apex controller this evening. I can say that the setup was awesome and painless. Goodbye timers hello worry free control. This device is amazing. Controlling my current lighting, heater, pump, skimmer. Soon I will be installing new LED lighting and have dimming control on the lights. Love it!!!
Kevin H., Evansville, IN
Just wanted to say thank you Apex for saving my tank today!!! Got a series of texts at work saying my reef temp dropped to 71.8! Turned out the heater’s plug was loose and was off. Good thing there were people at home (tho I have to spend 30 mins to explain, oh those non-reef ppl) … If it wasn’t for Apex I think I will come home with all dead corals/fish today *sobs* THANK YOU THANK YOU THANK YOU!
Cindy C., California
I’ve loved my Apex from the minute I set it up, but tonight was the first time it detected an actual problem and notified us. My boyfriend and I had just finished cleaning up from dinner when we both got text messages that the tank temp had hit 82 degrees. We found the tank dark with the lights out and a very hot hood; the connector to the fan for the lights had been disconnected, the lights had gotten too hot, the tank temp went up, and the Apex turned off the lights and sent the alerts. We got everything connected again and an extra fan running over the tank to drop the temp and everything’s returning to normal now, no harm no foul. It was a big purchase for me, but worth every penny. Thanks for making such a great product.
Coelli (reefcentral), Tujunga, CA