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On Sale 15%
Apex Trident Reagent Kit (6 Month Supply) - Neptune Systems
Neptune Systems$109.99$93.49Trident Reagent Kit 6 Month Supply - With six month kits, the cost of running the Trident is less than $17 per month - that’s averages out to about 7 cents a test! Neptune Systems recommends keeping on hand no more Trident reagent than you might... -
On Sale 15%
Apex Trident Reagent Kit (2 Month Supply) - Neptune Systems
Neptune Systems$49.99$42.49PLEASE ONLY PURCHASE 1x Two Month Supply. We will not be able to restock any reagents for the next 30 days. 2-month reagent kit (based on the default testing schedule of 4-Alk/2-Ca/2-Mg per day). The reagent kit has at least 240... -
On Sale 15%
Apex CD3 Crossover Diet Food - (3 oz) Pouch - Neptune Systems
Neptune Systems$14.95$12.71The Crossover Diet from Neptune Systems is a new type of food that was designed specifically for coral reef tanks and specifically for automatic feeding systems. Working closely with Reed Mariculture (the manufacturer of Reef Nutrition foods) we came up... -
On Sale 15%
Apex Temperature Probe - Neptune Systems
Neptune Systems$34.99$29.74Replace your Temperature Probe, add one for another tank, or put one on your PM2/PM3 module for temperature compensated readings. Buy this probe if you are: Replacing an old probe. Adding another tank to your system via a PM1. Want to have more... -
On Sale 15%
Apex MPR Magnetic Probe Rack - Neptune Systems
Neptune Systems$44.95$38.21Neptune Systems Magnetic Probe Rack Features – MPR: Organizes up to four probes. Designed specifically for the Apex Controller probes, a perfect fit for the thicker temp probes. Built with an all acrylic weather and shatter resistant design... -
On Sale 15%
Apex DOS Dosing Pump & Fluid Metering System - Neptune Systems
Neptune Systems$349.99$297.49A multi-purpose dosing and fluid delivery system of uncompromising quality combined with the simplicity of Apex Fusion software wizards for operations such as: 2-part dosing (Calcium and Alkalinity) Other additives dosing Automatic water... -
On Sale 15%
Apex AFS - Automatic Feeding System - Neptune Systems
Neptune Systems$115.99$98.59Feed your fish consistently, and safely, while you are home OR away! NOT A STAND-ALONE FEEDER (MUST BE USED WITH AN APEX SYSTEM) A key component of caring for aquatic animals is regularly providing them with food, but in amounts that get consumed... -
On Sale 15%
DOS Replacement Pump Head Cap - Neptune Systems
Neptune Systems$36.99$31.44DŌS Replacement Pump Head Cap for your Neptune Systems DŌS module. Complete assembly includes cover, peri-tube, fittings and roller wheel. Neptune Systems recommends that these be replaced approximately every 700 hours of pump run time. -
On Sale 20%
Apex TRIDENT (Alk, Cal, Mag) Monitoring Device - Neptune Systems
Neptune Systems$674.99$539.99The Trident is an automated testing system that regularly tests alkalinity, calcium, and magnesium in your saltwater aquarium — and then communicates this information to your Apex so you can get alerts, and change your dosing. When combined with... -
On Sale 15%
2-Month Trident NP Reagent Kit - Neptune Systems
Neptune Systems$59.99$50.99Do to the nature of the chemicals used in the reagents, all orders that include Trident NP reagents must ship ground only. Replacement Reagent Kit for Trident NP (2 Month Supply) Keep your Trident NP Nitrate and Phosphate Tester... -
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On Sale 15%
Apex 1LINK Power Cable Male to Male - 10’ - Neptune Systems
Neptune Systems$23.99$20.394-pin male to male cable many of you have been waiting for. It is ten feet long. This cable allows you to connect your DŌS to the 1LINK thereby eliminating the need for the DŌS to be connected to a power supply brick or the AquaBus cable. Just one wire!... -
On Sale 15%
PMUP V2 Practical Multipurpose Utility Pump - Neptune Systems
Neptune Systems$47.99$40.79The PMUP is a multi-purpose pump that can be used for many different tasks on your aquarium. Automatic Top-Off (ATO) Carbon reactors GFO reactors Biopellet reactors Many other salt or freshwater uses NEW IN VERSION 2: Automatic shut off when... -
On Sale 15%
Energy Bar 832 Apex 1LINK Power (EB832) - Neptune Systems
Neptune Systems$304.99$259.24This Energy Bar 832 was redesigned from the ground up. Not only does it have eight 120V AC outlets, but it includes an internal 100W 24VDC power supply as well. That power supply feeds three built-in 1LINK ports as well as two 24VDC accessory ports... -
On Sale 15%
V2 FMM Optical Level Sensor (OS-1) - Neptune Systems
Neptune Systems$29.99$25.49This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto-top-off), as a high-level warning sensor in... -
On Sale 15%
Magnetic Optical Sensor (MOS) - Neptune Systems
Neptune Systems$41.99$35.69The Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that also lends itself to help prevent water incursion into the sensor. This sensor plugs into your FMM and, using reflected... -
On Sale 21%
Duetto 2 Dual-Sensor ATO Aquarium Auto-Top-Off System - XP Aqua
XP Aqua$139.99$109.99With huge features jammed in a tiny package, the Duetto2 is the perfect ATO for your aquarium. XPAqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level... -
On Sale 15%
75 Watt Jager TruTemp Submersible Aquarium Heater - Eheim
EHEIM$24.49$20.82With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is... -
On Sale 15%
Apex ATK V2 Automatic Top-Off Kit ATO (ATK) - Neptune Systems
Neptune Systems$239.99$203.99The ATK (Automatic Top-off Kit) is a simple, standalone, and complete solution for replacing water lost to evaporation. The new aquarium hobbyist has many challenges, but none is more annoying than the chore of adding water, every day, to make up for... -
On Sale 15%
150 Watt Jager TruTemp Submersible Aquarium Heater - Eheim
EHEIM$31.99$27.19With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is... -
On Sale 15%
50 Watt Jager TruTemp Submersible Aquarium Heater - Eheim
EHEIM$26.99$22.94With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is... -
On Sale 15%
(306T-WIFI) WiFi Aquarium Heater Controller - Inkbird
Ink Bird$59.99$50.99Pre-wired Electronic Heating Thermostat Temperature Controller and Digital Timer Controller for Aquariums, now with WIFI control. ITC-306T WIFI is a pre-wired heating output temperature controller with time function specifically for aquariums. It can be... -
CoralVue HYDROS 6' Six Foot System Command Bus Cable (DATA+Power)
Hydros$9.99This 6 foott long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4. -
HYDROS Power 4 WiFi Power Strip - Coralvue
Hydros$39.99* Requires a HYDROS Controller to Operate. Will not operate standalone. The HYDROS Power 4 WiFi Power Strip is a smart power bar designed to work with the CoralVue HYDROS platform. The Power 4 has 4 x 120V AC outlets and 4 x USB ports... -
CoralVue HYDROS 1' One Foot System Command Bus Cable (DATA+Power)
Hydros$5.99This 1 foot long HYDROS System Command Bus Cable allows HYDROS devices to communicate and even provide power to the Control 2 and Control 4. -
On Sale 15%
300 Watt Jager TruTemp Submersible Aquarium Heater - Eheim
EHEIM$39.99$33.99With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is... -
On Sale 15%
Apex Lab Grade Salinity/Conductivity Probe - Neptune Systems
Neptune Systems$209.99$178.49Start measuring salinity in your tank and get alerts when out of range. Buy this probe if you are: Replacing an old probe. Adding salinity monitoring to your system via a PM2. -
On Sale 15%
Apex FMM Solenoid Valve (SV-1) - Neptune Systems
Neptune Systems$34.99$29.74This 24VDC powered, normally-closed (NC), solenoid valve has push-fit tubing input and outputs designed for standard 1/4″ tubing. The electrical connection on this solenoid valve fits the DC24 accessory ports found on the FMM, 1Link, and Energy Bar... -
HYDROS Dosing Pump
Hydros$59.99Requires a Hydros to Control the Unit The HYDROS Dosing Pump is a simple and affordable way to automate the addition of liquid supplements, trace elements, and two-part solutions to an aquarium. Connect the Dosing Pump to any available HYDROS Control... -
On Sale 15%
Double Junction Lab Grade pH Probe - Neptune Systems
Neptune Systems$94.99$80.74Double junction probes place a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first compartment, it still has to go through the second... -
On Sale 15%
Fluid Monitoring Module (Module Only) - Neptune Systems
Neptune Systems$109.99$93.49FMM – FLUID MONITORING MODULE IT DOES SO MUCH! This is just the module itself without and sensors. The FMM (Fluid Monitoring Module) is a module that connects to any Apex (Apex(2016), Apex Classic, Apex Lite, Apex Jr.) via it’s AquaBus... -
On Sale 15%
Apex COR 20 - Controllable Flow/Return Pump - Neptune Systems
Neptune Systems$399.99$339.99COR 20 - This pump is identical in physical size to the COR 15 but with the addition of an External power supply can push over 2000gph! All that flow for less than 100w of power and it is nearly silent. After deciding to do this larger, higher flow... -
HYDROS Water Level Sensor
Hydros$39.99Requires a HYDROS System to operate The HYDROS Water Level Sensor is an optical sensor you can use for a variety of aquarium applications, such as sensing when your tank needs to be topped off or to detect when a dosing container needs a refill. It... -
On Sale 15%
Apex PM1 - pH or ORP, Temperature, I/O Expansion Module - Neptune Systems
Neptune Systems$94.99$80.74The 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, or whatever else you may come up... -
On Sale 15%
Apex FMM Flow Sensor – 1″ (FS-100) w/Unions - Neptune Systems
Neptune Systems$65.99$56.09Usually used with a return pump, this flow sensor can be placed in line with the flow on any pipe, connected to the FMM, and communicate to your Apex the flow rate of water through that pipe. The flow sensor itself uses BSPP threads so for North... -
On Sale 20%
Multi-Reference Calibration Solution (100 ml) Works with Trident - Fauna Marin
Fauna Marin$19.99$15.99With the Fauna Marin Multi-Reference Solution, you can test your test kits under accurate conditions. Our Reference Solution is the first to be based on a saltwater matrix and is quality tested using our ICP-AES testing machine. We use a saltwater matrix... -
HYDROS WiFi Fish Feeder - Coralvue
Hydros$34.99Requires a HYDROS System to operate The HYDROS Automatic WiFi Fish Feeder is suitable for a variety of fish foods. A HYDROS Control is required to operate. The Fish Feeder is WiFi controllable using the free HYDROS app for Android and iOS/Apple mobile... -
On Sale 15%
Optical Multi-Surface Leak Sensor (LD-3) - Neptune Systems
Neptune Systems$42.99$36.54New to the leak detector offerings is the Optical Multi Surface Leak Sensor (LD-3). This is a weighted sensor that is an improved sensor and design over our Solid-Surface Leak Sensor (LD-2). Those improvements include: An epoxied design... -
On Sale 15%
200 Watt Jager TruTemp Submersible Aquarium Heater - Eheim
EHEIM$35.49$30.17With the EHEIM precision heater your fish receive exactly the right temperature – in any aquarium. Obvious ideas often are the best ones. For example, the aquarium heater as a rod. The heating rod is simply hung in the water and heats it. It is... -
HYDROS Triple Optical ATO Auto Top-Off Kit (Requires a Hydros Controller to Use)
Hydros$79.99Why purchase a separate and expensive auto top-off system when HYDROS can do the job for you? The HYDROS Auto Top-Off Kit comes with everything you need to use your HYDROS device (like the Control X2 or Control X4) as...