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    …be modified). Works on time (and volume for the FM-2) for up to five stages (can be less). Auto-Off function conserves battery power. The unit shuts off automatically after 5 minutes of non-use. The timer counts down in months or days (settings can be modified). Modern design is perfect for any…

    $39.99

    …dual EPDM O-rings to ensure a straight leak free fit. These high quality American made fittings are constructed with FDA approved materials. Turns off water flow Polypropylene construction NSF Standard 58 Certified Inline Ball Valve Sizes: 1/4" Push Connect x 1/4" Push Connect 3/8" Push Connect x…

    Starting at:
    $6.49

    …Instructions   1/4" Automatic shut off valves are used with float valves or pressurized tanks to shut off an RO system. It utilizes the back pressure created by the float valve or pressurized tank to shut off the water supply to the membrane. Without an automatic shut off valve waste water would…

    $9.99

    …to enter and exit the tank. The RO Tank Shut Off Valve will let you turn the water feed on and off from the pressure tank. By simply screwing onto the pressure tank you now have full control over the flow in and out of the tank. If you do not have this shut off valve you would need to drain all the…

    Starting at:
    $5.99

    …oz of collection Extra chamber for collecting skimmate Carbon filter cup to help reduce odor - easily removed for carbon exchange Auto shut off feature to turn off skimmer and avoid overflows   Item #: OCT-WC140   Height: 21.75" Diameter: 5.5" Footprint: 8.3" x 8.3" Drain line connection: 16" from…

    $234.99

    …reduce odor - easily removed for carbon exchange Auto shut off and 15min delay feature to turn off skimmer and avoid overflows   Specifications: Height: 18" Diameter: 3.9" Footprint: 6.5" x 6.5" 15 minute delay function keeps skimmer off an extra 15 minutes after power is lost. This feature allows…

    $219.99

    off based on the activation of a float valve. ASOVs do require a minimum of 40 PSI to operate correctly and can be installed on any style of reverse osmosis system that uses 1/4" tubing.   Auto Shut Off Kit Includes: Float valve 5ft of tube Inline check valve 1/4" auto shut off valve   Auto Shut Off

    $24.99

    …Min/MaxDimensionsWeight 1/3 HP 4000 115 7.25 480/2400 13.7” x 15.7” x 17.7” 61 1/4 HP 3000 115 6.00 480/1920 9.8” x 16.5” x 20.9” 51 1/5 HP 2400 115 5.00 480/1320 9.8” x 16.5” x 20.9” 49 1/10 HP 1270 115 2.63 240/960 9.8” x 16.5” x 18.5” 44   The JBJ Arctica Chillers incorporate some of the most…

    $813.46

    …aquariums without sumps. The combination of the sleek overflow box and the innovative dual-optical sensor ATO will help to keep your aquarium topped off and your water crystal clear.    The overflow box easily mounts to any aquarium with its magnetic mount. It acts as a surface skimmer to rid your…

    $149.99

    The Tunze Osmolator Nano 3152 Auto Top Off is designed for smaller tanks, approximately 50 gallons and under. One of the safest ATO’s available. Utilizes a single sensor to monitor water levels and a controller that protects against overdosing. Magnetic holder for sensors up to 10mm or .39". Max…

    $97.46

    Why does BRS recommend this? Bulk Reef Supply tried many different water level switches and auto top off solutions before giving the Tunze 3155 Osmolater Universal Auto Top Off BRS Recommended status. Despite its higher price this is by far our favorite solution. Spending the extra money on a Tunze…

    $199.99

    A Complete, Simple, & Standalone ATO! If you want a safe ATO system, the Neptune System ATK v2 uses a mixture of optical eyes and a float valve to ensure your tanks water level stays the same while preventing overfills. With the ATK v2 you do not need an Apex Controller since it can be run 100%…

    $199.95

    Replacement Santoprene tube for the BRS 2 Part and BRS Top Off Doser.

    $12.99

    …auto top off applications. Our peristaltic pump has a slow, predictable 50 mL per minute flow rate which ensures gradual and subtle changes to water chemistry. Precision two roller design extends pump life and will not back siphon. 24-month warranty offered by Bulk Reef Supply.   BRS Top Off Doser…

    $79.99

    …walls.   An auto top off system is one of the first automated devices any reef keeper should have. When water evaporates, the salt is left behind slowly increasing the salinity of the tank. By utilizing an ATO device evaporated water can easily be replenished by the top off unit throughout the day…

    $134.99

    …a Socket Switch is included that allows you to run a pump up to 10A (1,200W). They even include a solenoid valve for aquariums that are topped off directly with an RO/DI system.    Features: World' First 4-Sensor ATO Low water level optical sensor Two sensor dual-stage overfill alarm w/QST…

    $199.99

    …up caused from your holding container becoming full. Most often triggered with a float valve Your system must have a working auto shut off kit for this switch to work properly. ¼” Push Connect fittings Preset at 40 PSI Adjustable (30-60) PSI "trigger point" for application specific shut off pressure

    $19.99

    Set Includes: 1/4 cup 1/3 cup 1/2 cup 2/3 cup 1 cup Straight edge for leveling off dry goods for accurate measurements OXO has been producing quality kitchen equipment since 1990 under the philosophy of Universal Design or products usable by as many people as possible. The result is quality products…

    Starting at:
    $7.99

    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

    …seals are made of long-wearing, chemical resistant Santoprene rubber.   Note: Requires 1/2" mounting hole. To shut off your waste water you will need an auto shut off valve and check valve. If you don’t have these please purchase the “Auto Shut Off Kit.”   Float Valve Installation Instructions

    $15.99

    …seals are made of long-wearing, chemical resistant Santoprene rubber.   Note: Requires 1/2" mounting hole. To shut off your waste water you will need an auto shut off valve and check valve. If you don’t have these please purchase the “Auto Shut Off Kit.”   Float Valve Installation Instructions

    $14.99

    Build Your Own Auto Top Off System for your aquarium. Perfect for the DIY reefer who likes fun projects and wants to save a few dollars. Assembly requires only basic tools and no soldering. Basic knowledge of electrical wiring required. Aquahub DIY Top-it-Off Kit Premium Kit includes: (2) Aquahub…

    $45.99

    …behind. When water reaches the optical eye, it will send an electronic signal to the controller which will shut the included solenoid off, stopping the flow of water.  Automatically Shuts Off Your RO/DI System Installs and Uninstalls in Seconds No Holes or Drilling Magnetic Mount Dual Optical Eye…

    $69.99

    If you are looking at mounting your own T5 bulbs, these waterproof end-caps are what you need.   Package Includes: 2x Waterproof T5 Socket 2x Standoff for Waterproof T5 Socket   Waterproof sockets with stand-offs for T5 bulbs. Use stand-offs to attach to any surface. Includes 2 Waterproof Sockets…

    $16.99

    …tank will store the filtered water under pressure and allow it to come out at a much greater speed saving you time. Reverse Osmosis Pressurized Tank 4 Gallon tank Holds approxamately 3.2 gallons of water.   Reverse Osmosis Tank Shut Off Valve is not included and required for final assembly.  

    $49.99

    …volume, mix 1 teaspoon of Reef-Roids (25 gallons of tank volume, mix 1/4 teaspoon) with some of the tank water to create an even paste. Target feed your corals or disperse into a high flow area of the tank and then turn off circulation.   Guaranteed Analysis: Crude Protein (min) - 60% Crude Lipid…

    Starting at:
    $14.99

    …Aquatec 8800 Booster Pump - all in one kit. It also includes the pressure switch so it will work with reverse osmosis units that are set-up to shut off automatically. ¼” Push Connect fittings. Benefits of maintaining higher water pressures Improved waste water ratio Improved membrane rejection…

    $149.99

    …Ammonia and Nitrite. If either Ammonia or Nitrite are over .25 ppm, you can add more bacteria, if desired.  Day 5: Measure pH, Ammonia and Nitrite and record values  Day 6: Measure pH, Ammonia and Nitrite. If either Ammonia or Nitrite are over .25 ppm, you can add more bacteria, if desired.  Day 7:…

    $35.99

    …Ammonia and Nitrite. If either Ammonia or Nitrite are over .25 ppm, you can add more bacteria, if desired.  Day 5: Measure pH, Ammonia and Nitrite and record values  Day 6: Measure pH, Ammonia and Nitrite. If either Ammonia or Nitrite are over .25 ppm, you can add more bacteria, if desired.  Day 7:…

    Starting at:
    $3.99

    …or 200 GPD Water Saver systems. Kit includes an 800ml/min Auto Flush Flow Restrictor. Requires working Auto Shut Off Valve to operate.   Installation Instructions: 1. Turn off your source water supply.  2. Locate and replace the current flow restrictor with the new Auto Flush Flow Restrictor.…

    Starting at:
    $104.99

    …graduations every 1/4 cup but also 50mL, ensuring you have the correct amount of media or salt is super simple. Holding up to 20oz (2 1/2 cups) a single scoop will usually yeild enough salt for a 5 gallon batch.  Non-slip rubberized handle Easy pour lip Holds up to 2.5 cups 1/4 cup and 50 mL…

    $14.99

    …to get better performance out of your system. This booster pumps requires a transformer which is sold separately. If your RO system has an auto shut off kit or you are planning on installing one the Aquatec PSW Pressure Switches (sold separately) is also required. Benefits of maintaining higher…

    $99.99