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    Why does BRS recommend this? Check valves are always a good idea to have, however when it comes to reliability you get what you pay for.  There are other good check valves on the market but we feel that the Georg Fischer Wye check valve is by far the most superior.  They have a removable plunger…

    Starting at:
    $39.59

    Spears makes the highest quality True Union check valves. Use them to add a last line of defense against overflows. Check valves allow one directional water flow and are used to prevent back siphoning. They are commonly used on return pump outputs to prevent water overflowing the sump in the event…

    Starting at:
    $21.59

    SPECIFICATIONS: 3/16" Barb x 3/16" Barb Tubing ID: 3/16" Fitting Material: Kynar NPT Connection: None 1/4" Barb x 1/4" Barb Tubing ID: 1/4" Fitting Material: Kynar NPT Connection: None 3/8" Barb x 3/8" Barb Tubing ID: 3/8" Fitting Material: Kynar NPT Connection: None

    Starting at:
    $11.69

    These are among the highest quality check valves to be found. Relative to other types and manufacturers of check valves, there is minimal pressure loss. The true union check valve is specially designed to be disassembled by unscrewing the nuts in line leaving the tail pieces solvent cemented to the…

    Starting at:
    $15.29

    The golden rule of plumbing is that every job takes three trips to the store. While this can be frustrating locally it can be much worse when shopping online. Being short a fitting or two can delay a plumbing project for days. Here are some quick tips to avoid this. Plan your plumbing on paper Don't…

    Starting at:
    $17.99

    Check valves only allow water to flow one direction. 1/8" Male NPT x 1/4" Push Connect elbow check valves are typically used on the product water output of RO membrane housings to protect from back pressure and allow auto shut off valves to operate correctly.

    $3.99 $3.59

    We believe GA Murdock Mur-lok fittings to be the best so strongly that we use them virtually exclusively on each of our BulkReefSupply.com reverse osmosis units and BRS media reactors.

    $8.99 $8.09

    Spears makes the highest quality check valves. Use them to add a last line of defense against overflows. Check valves allow one directional water flow and are used to prevent back siphoning. They are commonly used on return pump outputs to prevent water overflowing the sump in the event of a power…

    Starting at:
    $18.89

    Easily calibrate and test proper functionality of your Hanna Checker HI713 Phosphate Low Range for fresh and marine water (saltwater). Contains Standard A, Standard B and 1 Packet 713-25 Reagent* Follow instructions in packaging Acceptable results must be between 0.92 and 1.08 ppm at 25°C…

    $12.00 $10.80

    Loc-Line flexible modular plumbing offers endless plumbing configurations and is useful for unique plumbing designs. Loc-Line is commonly used on return lines and closed loops where it is important to direct the water flow in a particular direction.

    $9.79 $8.81

    Easily calibrate and test proper functionality of your Hanna Checker HI717 Phosphate HR for fresh and marine water. Contains Standard A and Standard B Follow instructions in packaging Acceptable results must be between 14.0 and 16.0 ppm at 25°C   Hanna Checker Instructions for Fresh & Marine Water…

    $12.00 $10.80

    Easily calibrate and test proper functionality of your Hanna Checker HI772 Alkalinity (DKH) for fresh and marine water. Contains Standard A and Standard B Follow instructions in packaging Includes certificate of analysis Reusaable with long shelf life Hanna Checker Instructions for Marine Alkalinity…

    $20.00 $18.00

    Easily calibrate and test proper functionality of your Hanna Checker HI736 Phosphorus Ultra Low Range for marine water (saltwater). Contains Standard A and Standard B Follow instructions in packaging Acceptable results must be between 90 and 110 ppb at 25°C   Hanna Checker Instructions for…

    $13.99 $12.59

    Easily calibrate and test proper functionality of your Hanna Checker HI755 Alkalinity for marine water. Contains Standard A and Standard B Follow instructions in packaging Acceptable results must be between 90 and 110 ppm at 25°C   Hanna Checker Instructions for Marine Alkalinity Standards: 1.…

    $12.00 $10.80

    Easily calibrate and test proper functionality of your Hanna Checker HI758 Calcium for marine water (saltwater). Contains Standard A and Standard B Follow instructions in packaging Acceptable results must be between 380 and 420 ppm at 25°C   Hanna Checker Instructions for Nitrite ULR Standards: 1.…

    $17.00 $15.30

    Easily calibrate and test proper functionality of your Hanna Checker HI764 Nitrite Ultra Low Range for marine water (saltwater). Contains Standard A and Standard B Follow instructions in packaging Acceptable results must be between 86 and 114 ppb at 25°C   Hanna Checker Instructions for Nitrite ULR…

    $12.00 $10.80

    …Connect Check Valve   Note: Housing has 1/8" Female NPT Fittings. We highly recommend the use of a push connect elbow check valve on the product water line if you are going to use an auto shut off valve on your RODI system.  The use of a non-check push connect elbow is totally fine, as inline check

    $8.99 $8.09

    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 $22.49

    Match your décor by installing a Reverse Osmosis Faucet to your RO system. This style of faucet does not have an air gap for the waste water line.  If installing for drinking water you should check with city code to see if it requires an air gap faucet.

    Starting at:
    $22.49

    …in sink drain pipe close to the sink Stick included gasket around hole (remove die cut circle from center if needed Position clamp on pipe and fasten with included screws Push in tubing and check for leaks 1/4" hole needed for 1/4" drain saddle clamp 3/8" hole needed for 3/8" drain saddle clamp  

    Starting at:
    $4.49

    All Bulk Reef Supply RODI units come pre-installed with an Auto Shut Off Valve and check elbow. If you wish to add a float valve to your BRS RODI system, just purchase a float valve separately and connect it to your product water line.  Standard Float Valve Adjustable Float Valve   Auto shut off…

    $24.99 $22.49

    …O-rings to ensure a straight leak free fit. These high quality American made fittings are constructed with FDA approved materials. Mur-lok 90° Elbow Check Valve Polypropylene construction NSF Standard 58 Certified   Sizes -  Stem x Push Connect: 3/8" Stem x 1/4" Push Connect 3/8" Stem x 3/8" Push…

    Starting at:
    $8.09

    …supply and check valve that can go inline between the reactor and solenoid valve.    Connecting the Tunze CO2 Regulator and regulator to your bottle only takes a few seconds. Just close the pressure adjustment valve all the way, screw the union nut onto the cylinder, the solenoid and check valve…

    $210.00 $189.00

    …O-rings to ensure a straight leak free fit. These high quality American made fittings are constructed with FDA approved materials. Mur-lok 90° Elbow Check Valve Polypropylene construction NSF Standard 58 Certified   Sizes -  Male NPT x Push Connect: 1/4" Male NPT x 1/4" Push Connect 1/4" Male NPT x…

    $9.99 $8.99

    …that includes 8 of the most popular parameters for saltwater aquariums in a single solution. Fauna Marin’s Multi-Reference Solution is used to check your home water test kits for accuracy. Using your water test kits at home, you can measure the reference solution and then compare those results…

    $19.99 $17.99

    …pressurized tank RO tank valve Silver faucet Faucet adaptor Tee for between faucet and pressurized tank Ball valve for turning on and off DI water Check valve for insuring that water in the pressurized tank doesn't flush through the DI resin Tee for bypassing the DI stage.   20 Ft of blue ¼" tubing

    $99.99 $89.99

    …supersaturated kalkwasser solution.   Very convenient design that can be mounted hanging on the back of the aquarium or below the aquarium. Includes check valve and flexible connection fittings that rotate 180 degrees to allow a perfect custom fit to your installation. Threaded lid design makes…

    $85.14

    …System or ATO of your choice. Complete with Lift pump, return pipe and acrylic Max output of 15 GPH Max Head: 5 Ft Self-priming pump Built-in check valve prevents back siphoning Thermally protected   HydroFill ATO Pump Specifications Pump Dimensions: 3.38" x 2.75" x 5.59" Voltage: 12V Power…

    $69.99

    …Molex connectors into the Power Supply and also the auto flush flow restrictor.  5. Turn your source water supply on, and do a quick leak check. Once the leak check is complete, you can plug the Aquatec Power Supply into any wall outlet to energize the system.   What's Included? 1x Aquatec…

    Starting at:
    $94.49

    …be away from valve.Insert brass insert into tubing end.Tighten compression nut to valve to attach tubing. Do not over tighten.Slowly turn valve handle clockwise to pierce pipe. Turn it all the way. This is the "OFF" position.Back the valve handle out to open.Turn on water supply and check for leaks.

    Starting at:
    $7.19

    …system starts up it will give you a visual report if something is wrong within a couple seconds.   IP65 water resistant Displays in °F or °C CAL Check ±0.5°F accuracy Silicone probe cable Large display AISI 316 stainless steel probe User selectable auto-off   Hanna's Checktemp comes with a…

    $39.00 $35.10

    …the pump.   Compatible with any Apex Controller (requires 1Link port) Don't have a 1Link port on your Apex System? Check out the Neptune 1Link Module Need a longer 1Link Cable? Check out the 1Link Extension Cable   Specifications: Pump Dimensions - 3.875" W x 4.875" H x 6.250" D Driver Dimensions -…

    $299.95