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    …system without a TDS meter is like driving a car without a speedometer and gas gauge.  At some point you will end up in trouble.  With RODI systems it is TDS that you will want to monitor for performance and filter quality.  By using a dual TDS meter it will allow you to see your TDS readings in two…

    $29.99

    The TDS-3 Handheld TDS Meter from HM Digital is a useful tool to spot check the TDS of your home water supply or RO/DI unit output. This unit features a digital display, built in thermometer, and comes with a carrying case. As with all HM-Digital products, the TDS-3 comes factory calibrated.

    $24.99

    …RODI systems it is TDS that you will want to monitor for performance and filter quality.  If you have a single or dual DI stage we highly recommend a triple TDS meter as it will allow you to see your TDS readings in three places.  We will usually suggest installing the triple TDS meter post source…

    $44.99

    …hold the electrode in place until the next time you need to replace it.  Replacement pH Electrode - HI73127    Specifications: TDS Range - 0-2000ppm TDS Resolution - 1ppm TDS Accuracy - ±2% F.S. EC Range - 0-3999µS/cm EC Resolution - 1µS/cm EC Accuracy - ±2% F.S. pH Range - 0.0-14.0 pH Resolution -…

    $157.99

    Deionization (DI) Resin is used as the last stage of a RODI system to reduce any remaining total dissolved solids (TDS) down to undetectable levels, making perfect water for reef tanks. Professionally Packed Color Changing (Changes from blue to brown as it depletes) Vacuum packed in foil-lined 4mm…

    $23.99

    …RO/DI System Included Upgrades HM Digital Inline Dual TDS Meter - Instantly know the purity of your water, before and after the deionization stage. The inline probes come pre-installed and with the simple push of a button, your waters TDS is displayed on the LDC monitor.  Glycerin Filled Pressure…

    Starting at:
    $264.99

    …of TDS meters from AutoAqua are the smallest inline TDS meter in the hobby, making it very easy to find a spot to mount the display, and as the name would suggest, the TDS probes have titanium conductors, which provide great longevity and protection from corrosion. In addition, each Titanium TDS

    $24.99

    …RO/DI System Included Upgrades HM Digital Inline Dual TDS Meter - Instantly know the purity of your water, before and after the deionization stage. The inline probes come pre-installed and with the simple push of a button, your waters TDS is displayed on the LDC monitor.  Glycerin Filled Pressure…

    Starting at:
    $214.99

    NaCl calibration solution, available in 342 ppm. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.

    $7.99

    …of TDS meters from AutoAqua are the smallest inline TDS meter in the hobby, making it very easy to find a spot to mount the display, and as the name would suggest, the TDS probes have titanium conductors, which provide great longevity and protection from corrosion. In addition, each Titanium TDS

    $33.99

    …mS TDS Range: 0 – 8560 ppm (0.7 Scale); 0 – 8.56 ppt (0.7 Scale) 0 – 5000 ppm (0.5 Scale); 0-8.56 ppt (0.5 Scale) Temperature Range: 0-55 °C; 32-130°F Resolution: 0-99: 0.1 µS/ppm/ 0.01mS/ppt; 100-999: 1 µS/ppm; 1000-9990: 10 µS/ppm. Temp. resolution is 0.1 °C/F Accuracy: +/- 2% EC to TDS Conversion…

    $76.95

    …as the second stage.   Dual TDS Meter Preinstalled Metering Locations Sensor 1 - Incoming water to DI stage 1 Sensor 2 - Final output from DI stage 2   Dimensions - 10" x 6.25" x 14"   What's Included? 1x Dual Deionization Canister Assembly 1x HM Digital DM-1 Dual TDS Meter 5 Feet Blue RO Tubing  …

    $64.99

    …of TDS meters from AutoAqua are the smallest inline TDS meter in the hobby, making it very easy to find a spot to mount the display, and as the name would suggest, the TDS probes have titanium conductors, which provide great longevity and protection from corrosion. In addition, each Titanium TDS

    $44.99

    …hydrogen or hydroxide molecules for contaminants like phosphate, silica, nitrate, sulfate, aluminum, iron, calcium, etc allowing you to achieve 0 TDS water for your aquarium and help eliminate any possible water quality issues. You may or may not know that there are multiple types of DI resin…

    Starting at:
    $14.99

    …aluminum, iron, and other positively charged ions. Mixed bed DI resins accomplish the exact same task by removing contaminants and delivering 0 TDS water, but depending on contaminants in your water you may want a cation or anion color changing resin for the best results and efficiency! Two Sizes…

    Starting at:
    $14.99

    …of minutes.   Compatible with: 150 GPD Water Saver Upgrade - All BRS 75 GPD RO/DI Systems 200 GPD Water Saver Upgrade - All BRS 100 GPD RO/DI Systems   Recommended Conditions: Minimum Water Pressure - 65 PSI Max Water Pressure - 90 PSI Recommended Water Temperature - 77°F Recommended Max TDS -

    Starting at:
    $59.99

    …you are connected to city water we offer a variety of RO/DI systems that will fit your aquarium's needs.   4 Stage Value RO/DI Features: Produce 0 TDS water Minimal waste water Multiple source water connections Mur-lok Push Connect dual EPDM O-Ring fittings 10 Ft Each of 1/4" Blue, Red and Black…

    Starting at:
    $149.99

    …to monitor the consumption of the DI resin and know when to change it out.  If you have a TDS meter we still recommend color changing resin as it will let you know when to monitor your TDS meter for when TDS starts creeping through the DI resin.  When it comes to packaging not just any packaging…

    Starting at:
    $13.99

    …rate that can be reproduced through the following conditions; Source Water Pressure - 50 PSI / Membrane Source Water Temperature - 77°F Source Water TDS - 250ppm Softened Tap Water Recovery - 15% Minimum Salt Rejection - 96% For more info on DOW Filmtec BW60-1812-75 Membrane - Click Here   Membrane…

    $34.99

    …basis.  The use of this auto-flush flow restrictor can reduce the “brine to product” ratio, especially in low “TDS” applications, while maintaining or improving system “TDS” rejection rate and extending membrane sediment and carbon filter life.   Upon system start-up and every hour thereafter,…

    Starting at:
    $54.99

    The DM-2 Commercial Dual Inline TDS Meter from HM Digital has a stronger water resistant casing than the DM-1. This tool monitors the TDS of your reverse osmosis system in two places and lets you know exactly how the system is performing. DM-2 features include: Especially designed for…

    $45.99

    Plate Dimensions - 9.25" x 8.25" x 1.5" Xport-Bio is great for tanks that have minimal aquascape, or heavily stocked. The biomedia plates can be put just about anywhere within the system to allow more surface area for biological filtration, resulting is faster conversion of ammonia and nitrite into…

    $39.99

    …contaminant rejection Ideal for membranes rated from 10-100 GPD Effective for inlet water pressure as low as 30 psi Increases membrane life, lower “TDS creep” Fills product tank up to 4 times more rapidly NSF approved (Standard 58) Two-year manufacturer’s warranty   Note: Does not increase source…

    $59.99

    …and get alerts when it is out of range. Replace an old probe Add salinity monitoring to your system via the Salinity Module: PM2   *Calibration solutions sold separately Use 53.0mS calibration fluid for monitoring salinity of saltwater Use 447mS calibration fluid for monitoring TDS of freshwater

    $124.95

    The SM-1 Single Inline TDS Meter from HM Digital measures the TDS of a single water line. This is a great tool to monitor the TDS of your reverse osmosis system. Common monitoring locations include pre-system, post membrane or post DI stage. This unit features a digital display and comes with a 1/4"…

    $24.99

    TDS Meter: The DM-1 Dual Inline TDS Meter from HM Digital is one of the most important reverse osmosis accessories. This tool monitors the TDS of your reverse osmosis system in two places and lets you know exactly how the system is performing. BulkReefSupply.com suggests installing the dual TDS

    Starting at:
    $59.99

    …float valves and switches will automatically turn on your RODI system after a couple drops of water are removed from the reservoir which can cause TDS creep and simply an inefficient use of water. XP Aqua's Flood Guardian lets you program in a 1 to 7-day delay timer that will let you pull water out…

    $69.99

    Xport-NO3 is a superior biomedia that utilizes NanoIntelex technology allowing Brightwell to create one of the best, most adaptable denitrifing biomedia cubes on the market today. Xport-NO3 is great for tanks that have minimal aquascape, or heavily stocked. The biomedia cubes can be put just about…

    Starting at:
    $13.99

    …contaminant rejection Ideal for membranes rated from 10-100 GPD Effective for inlet water pressure as low as 30 psi Increases membrane life, lowers “TDS creep” Fills product tank up to 4 times more rapidly NSF approved (Standard 58) Two year manufacturer’s warranty 1/4" Push Connect hose connections…

    $63.99

    …Depth Sediment Filters, American made DOW membranes and Omnipure filters. Dimensions - 16" x 6.25" x 17.5" (RO bracket) / 6" x 5" x 13" (DI bracket)   Recommended Conditions: Minimum Water Pressure - 50 PSI Max Water Pressure - 90 PSI Recommended Water Temperature - 77°F Recommended Max TDS -

    Starting at:
    $269.99

    …Triple Inline TDS Meter! Just add DI resin. We suggest using BRS Pro Series Single Bed Cation Resin, Pro Series Single Bed Anion Resin, and Pro Series Mixed Bed Cation Color Changing Resins. Super efficient Choose your own resin Stop throwing away good resin Triple TDS Meter already installed…

    $89.99

    …one of the most essential pieces of equipment is a good RO/DI system. The BRS 4 Stage RO/DI System can be installed in just a few minutes, making 0 TDS water. This system is great for water supplies that are treated with chlorine or low-contaminant well water and can be easily upgraded to a 5-Stage…

    $507.70 $489.99