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Control

Controlling and Monitoring your Aquarium is Crucial, so are Topping up Evaporation Water via Automation, Heating, Cooling and Auto Top Off (ATO).

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  • Controller Cabinet Recessed Faceplate - White Double Slat - Adaptive Reef

    Controller Cabinet Recessed Faceplate - White Double Slat - Adaptive Reef

    Adaptive Reef

    $49.99
    Adaptive Reef Controller Cabinet Recessed Faceplate - Double Slat - Recessed faceplates provide for a cleaner more flush installation to give your cabinet a higher-end, more custom look. They fit a wide variety of aquarium controllers, pump...
  • 2 Channel AquaSurf / Apex to Stream Cable - Neptune Systems

    2 Channel AquaSurf / Apex to Stream Cable - Neptune Systems

    Neptune Systems

    $21.99
    This three foot cable connects to the variable outputs built into the Apex, Apex Classic, and the VDM which has two DIN5 connectors.  This enables speed control of up to two TunzeTM Stream pumps that are compatible with...
  • On Sale 15%
    ULTRA Thin Aquarium Heater 150 Watt - AquaEl
    On Sale 15%

    ULTRA Thin Aquarium Heater 150 Watt - AquaEl

    AquaEl

    $74.60
    $63.41
    The heater is easy to control using the ONE-TOUCH system that employs a single button surrounded by a ring of LEDs indicating the current and set temperatures. The electronic thermostat operates with an exceptional precision (+/- 0.25° C) to...
  • On Sale 15%
    Level Sensor - Floater -  Version 2 - GHL
    On Sale 15%

    Level Sensor - Floater - Version 2 - GHL

    GHL

    $39.90
    $33.92
    Level sensor, Floater with Mini-DIN-plug and 3 m cable. For vertical mounting only (sensor fastener PL-LF-S8). Possible uses of level sensors provided by the ProfiLux Controller: Auto Top Off with one or two...
  • 3" USB Smart Aquarium Fan (AF80) - Reef Octopus

    3" USB Smart Aquarium Fan (AF80) - Reef Octopus

    Reef Octopus

    $46.19
    Excellent for light canopies, enclosed stands & cabinets to control heat and improve air circulation. The Reef Octopus USB Smart Fan will automatically increase or decrease the fan speed depending on the ambient temperature of the area surrounding...
  • Desktop Gravity Fed ATO Cube & Peninsula - Red Sea

    Desktop Gravity Fed ATO Cube & Peninsula - Red Sea

    Red Sea

    $20.95
    Red Sea's ATO fits perfectly on the rear compartment of the Desktop Aquarium range to maintain a consistent water level in the sump area. This allows for quiet and consistent operation of the pump and skimmer Features of the Desktop ATO by Red...
  • GHL Doser & KH Director Faceplate Double Slat - White - Adaptive Reef

    GHL Doser & KH Director Faceplate Double Slat - White - Adaptive Reef

    Adaptive Reef

    $49.99
    Faceplates provide for a cleaner more flush installation to give your cabinet a higher-end, more custom look. They fit a wide variety of aquarium controllers, pump controllers, and auto top-off (ATO) controllers. Some popular examples...
  • On Sale 15%
    300 Watt  Titanium Heater w/HC-820M Digital Controller (40-80 Gallon) - Finnex
    On Sale 15%

    300 Watt Titanium Heater w/HC-820M Digital Controller (40-80 Gallon) - Finnex

    Finnex

    $95.99
    $81.59
    The Titanium Finnex Heaters are corrosion-resistant, extending the life exponentially from saltwater damage.  Virtually unbreakable, especially in comparison with the standard glass aquarium, these tube are built to last.  The ultra heating...
  • M 200 Watt Submersible Glass  Heater (up to 65 Gallons) - Fluval

    M 200 Watt Submersible Glass Heater (up to 65 Gallons) - Fluval

    Fluval

    $35.99
    M series heaters combine modern aesthetics with reliable Italian construction. Employing an ultra-slim profile, M heaters are a welcomed departure from traditional, more bulky designs. The M series is highlighted by its reflective...
  • 24v Apex Red/Green Status Indicator (Dual) - Adaptive Reef

    24v Apex Red/Green Status Indicator (Dual) - Adaptive Reef

    Adaptive Reef

    $99.99
    Adaptive Reef in conjunction with Harry's Aquatics is pleased to bring a full line of products designed to work with and enhance the user experience with aquarium controllers. From switch control boxes and 0-10v based devices to warning lights and...
  • On Sale 15%
    Thermocontrol-E (125 Watt) Aquarium Heater - EHEIM
    On Sale 15%

    Thermocontrol-E (125 Watt) Aquarium Heater - EHEIM

    EHEIM

    $49.99
    $42.49
    Made in Germany, 3 Year Warranty, Run Dry Protection! The obvious ideas are often the best. This also applies to the aquarium heating element. It is simply hung in the water and heats it up. The principle is the same as it was decades ago. But in the...
  • On Sale 15%
    Thermocontrol-E (50 Watt) Aquarium Heater Kit - EHEIM Inkbird
    On Sale 15%

    Thermocontrol-E (50 Watt) Aquarium Heater Kit - EHEIM Inkbird

    EHEIM

    $89.99
    $76.49
    Kit Includes: EHEIM Thermostat E Heater - Made in Germany, 3 Year Warranty, Run Dry Protection & INK BIRD Dual Aquarium Thermostat Temp Controller for Redundancy! The obvious ideas are often the best. This also applies to the aquarium heating...
  • On Sale 15%
    Level Sensor - Optical -  Version 2 - GHL
    On Sale 15%

    Level Sensor - Optical - Version 2 - GHL

    GHL

    $87.90
    $74.72
    Level sensor, optical with Mini-DIN-plug and 3 m cable. For horizontal mounting only. (Sensor fastener PL-LF-S12 angled). Possible uses of level sensors provided by the ProfiLux Controller: Auto Top Off with one or two...
  • Smart Security System Combo Set - AutoAqua

    Smart Security System Combo Set - AutoAqua

    AutoAqua

    $159.99
    Safeguarding Your Aquarium Against Common Malfunctions Extremely Simple to Install Plug & Play Magnetically Coupled Sensor Auto Time Delay Why Choose Smart Security System? Smart Security System consists of three seperate penny sized...
  • On Sale 15%
    Dosing Container 2.5L - Seaside Aquatics
    On Sale 15%

    Dosing Container 2.5L - Seaside Aquatics

    Bubble Magus - Seaside

    $55.99
    $47.59
    For use with your top off or dosing pump2.5L - over all 13.5" tall by 5.25" diameter*** Caution ***Red Sea's NO3:PO4X chemical will crack and damage the containers, this product is not to be use with our containers.
  • HTG Glass Heater with Protective Guard (100W) -  Aquatop

    HTG Glass Heater with Protective Guard (100W) - Aquatop

    Aquatop

    $34.99
    The HTG Series is our premier line of fully submersible glass heaters with thermostat control. Our HTG heaters offer a compact design for versatile placement and are extra durable due to the built-in glass element. The thermostat control makes it simple...
  • Dual Magnetic Heating Element Holder - 2 Pack - Innovative Marine

    Dual Magnetic Heating Element Holder - 2 Pack - Innovative Marine

    Innovative Marine

    $62.99
    The heating element holders safely keep your aquarium and or sump from direct contact with your heating elements. Adjust the heating elements to your manufacturer's designated water level and position by using the Magnetic holders. Heating Element...
  • GHL Doser & KH Director Faceplate Double Slat - Black - Adaptive Reef

    GHL Doser & KH Director Faceplate Double Slat - Black - Adaptive Reef

    Adaptive Reef

    $49.99
    Faceplates provide for a cleaner more flush installation to give your cabinet a higher-end, more custom look. They fit a wide variety of aquarium controllers, pump controllers, and auto top-off (ATO) controllers. Some popular examples...
  • On Sale 15%
    Temperature Sensor Digital - GHL
    On Sale 15%

    Temperature Sensor Digital - GHL

    GHL

    $68.90
    $58.57
    Temperature sensor with BNC-plug, 3 m cable, for GHL Doser 2, Expansion Box 2 and expansion cards with digital temperature port.  All GHL measurement electrodes are made of the highest laboratory grade. They are durable, low maintenance, and...
  • On Sale 15%
    Powerbar 6E USA/CND PAB - GHL
    On Sale 15%

    Powerbar 6E USA/CND PAB - GHL

    GHL

    $250.90
    $213.27
    Specially developed for Aquatics. The perfect and safe functioning of the powerbars in an aquarium controller system is essential. They feature on/off switching of electrical loads for components such as heaters, cooling devices, solenoid...
  • Mini Neptune Apex Controller Board BLACK - Adaptive Reef

    Mini Neptune Apex Controller Board BLACK - Adaptive Reef

    Adaptive Reef

    $114.99
    Purpose-Built for the Neptune Systems Apex Safely mount electrical equipment 15" x 15" size Pre-drilled holes Includes hinges for easy access Available in Black or White Introducing the Neptune Systems Mini Controller Board from Adaptive Reef,...
  • On Sale 15%
    Level Sensor Fastener for Optical sensor v2 - GHL
    On Sale 15%

    Level Sensor Fastener for Optical sensor v2 - GHL

    GHL

    $8.90
    $7.57
    This level sensor fastener is required for mounting the optical level sensor (Version 2) vertically onto the level sensor holder basic unit. Vertical mounting
  • Smart ATO RO Water Reservoir Control - AutoAqua

    Smart ATO RO Water Reservoir Control - AutoAqua

    AutoAqua

    $179.99
    SMART & SIMPLE The touch controller shows the operation status. Built-in QST (Quick Security Technology) provides real-time failsafe protection against failure. There’s no technical jargon or complex menu system. It features Audible...
  • Helio 350 Watt PTC Heating Element - Innovative Marine

    Helio 350 Watt PTC Heating Element - Innovative Marine

    Innovative Marine

    $87.99
    Innovative Marine is proud to introduce HELIO, our new line of heaters utilizing ultra-safe PTC (positive temperature coefficient) technology. Up until now, the way we chose to heat our aquariums have been electric immersion heaters that use resistance...
  • HTG Glass Heater with Protective Guard (200W) -  Aquatop

    HTG Glass Heater with Protective Guard (200W) - Aquatop

    Aquatop

    $35.99
    The HTG Series is our premier line of fully submersible glass heaters with thermostat control. Our HTG heaters offer a compact design for versatile placement and are extra durable due to the built-in glass element. The thermostat control makes it simple...