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Controllers & Monitors
We carry a wide range of aquarium controllers & monitors from American Marine, BioTek Marine, Hanna Instruments, Apogee Instruments, Neptune Systems, Tunze, Hydros & more. If you need help selecting the right product for your budget and needs then please call or email us.
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Neptune Systems Advanced LED Dimming Module NE... Advanced LED Dimming Module NEP-VDM
$129.99Ships Next Business Day -
Neptune Systems PM3 Disolved Oxygen, Temperatu... PM3 Disolved Oxygen, Temperature, I/O Expansion Box
$129.99Ships Next Business Day -
Neptune Systems PM2 Conductivity, Temp, I/O Ex... PM2 Conductivity, Temp, I/O Expansion
$119.99Ships Next Business Day -
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Neptune Systems DOS Quiet Drive Dosing & F... DOS Quiet Drive Dosing & Fluid Metering System
$374.99Ships Next Business Day -
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Neptune Systems Advanced Leak Detection Low Pr... Advanced Leak Detection Low Profile Probe
$39.99Ships Next Business Day -
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Neptune Systems Oxyguard Dissolved Oxygen Prob... Oxyguard Dissolved Oxygen Probe With 10' Cable
$899.99Ships Next Business Day -
Neptune Systems Conductivity Calibration Solut... Conductivity Calibration Solution - 53.0 mS
$5.99Ships Next Business Day -
Neptune Systems 2 Channel Apex to Light Dimmin... 2 Channel Apex to Light Dimming Cable
$24.99Ships Next Business Day -
Vertex Acrylic Sensor Mount
Special Price $2.99 Regular Price $11.99Order by 3:30pm EST for Same Day Shipping (M-F) -
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Neptune Systems Apex 2 Channel AquaSurf/Apex t... Apex 2 Channel AquaSurf/Apex to Stream Cable
$29.99Ships Next Business Day -
Neptune Systems Conductivity Calibration Solut... Conductivity Calibration Solution - 447 uS
$5.99Ships Next Business Day -
Neptune Systems Oxyguard Membrane Kit (5 membr... Oxyguard Membrane Kit (5 membrane + soln)
$99.99Ships Next Business Day -
Hanna HI700 Checker Ammonia Low Range Fres... Checker Ammonia Low Range Fresh Water
$67.99OUT OF STOCK -
American Marine Pinpoint Oxygen Probe Replacem... Pinpoint Oxygen Probe Replacement
$149.00Usually Ships In 2 - 3 Business Days -
American Marine Pinpoint II Calcium Probe Asse... Pinpoint II Calcium Probe Assembly
$166.40Usually Ships In 2 - 3 Business Days -
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Milwaukee ORP57 PRO Waterproof ORP/Temperature... PRO Waterproof ORP/Temperature Tester with Replaceable Probe
$114.99Usually Ships in 2 - 3 Weeks -
Hanna Instruments 35 ppt Salinity Calibration So... 35 ppt Salinity Calibration Solution Packs
Starting at: $10.00Order by 3:30pm EST for Same Day Shipping (M-F) -
Hanna Instruments HI98319 Marine Salinity Tester
$89.99Order by 3:30pm EST for Same Day Shipping (M-F) -
Hanna Instruments Checker Plus pH Tester HI98100
$59.99Order by 3:30pm EST for Same Day Shipping (M-F) -
HYDROS ATO Auto Top-Off Kit (Closeout)
Special Price $58.00 Regular Price $79.99Call For Availability -
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Reef Factory Dosing pump head for Kh Keeper... Dosing pump head for Kh Keeper Reagent pump/DP PRO
$58.99Usually Ships in 1 - 2 Business Days -
GHL Replacement Complete Dosing Pump for Dosin... Complete Dosing Pump for Dosing Unit
$93.90Factory Direct -
GHL Replacement Dosing Pump Complete Head Outd... Dosing Pump Complete Head Outdoor
$96.90Factory Direct
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