Gravity

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    …of Parts Per Thousand of saturated salt. This is the oldest of the 3 seawater measurements scales * S.G. - The current standard of Specific Gravity hydrometers and refractometers.   The Milwaukee Instruments MA887 digital refractometer is easy to calibrate and easy to read…

    $124.99 Regular Price: $

    Precise & Reliable Specific Gravity Readings in any Lighting Conditions! Refractometers are a must-have piece of equipment for any aquarists! Easily and accurately measure the salinity of your tank and with the built-in LED light, your readings will be consistent no matter the type of…

    $39.99 Regular Price: $

    …Adjustable Speed Magnetic Stirrer * Push-Connect Fittings * Made of PVC and Acrylic * Quick-Fill Cap For Adding Kalk * Gravity Drain System For Consistent Doses * Sealed Environment Keeps the Kalkwasser Potent    Perfect for Reef Tanks…

    $269.99 Regular Price: $

    …is clear and test the specific gravity of the solution. Add salt or water as needed to meet your desired salinity. To mix by weight - Add approximately 1lbs of HW Reefer Salt every 3.6 gallons of RODI water. Let it mix until it is clear and test the specific gravity of the solution. Add salt or…

    $69.99 Regular Price: $

    gravity for reading Tropic Marin Bio-Actif Salt.    When you have added almost all of the salt and the mixture is fully dissolved, start measuring the specific gravity with a refractometer or similar instrument. Keep adding small amounts of salt until the specific gravity is the…

    $46.73 Regular Price: $

    …to the overall specific gravity of the water. Many digital salinity meters are calibrated to read a sodium chloride only or brine solution and when applied to seawater, measurements are not accurate. The SAL-1700 is specifically calibrated to measure the specific gravity of seawater as opposed to…

    $69.99 Regular Price: $

    …NeoMarine Salt.  To mix saltwater with a specific gravity of 1.025 g/cm3 add approximately 1/2 cup (134.5g or 4oz) of NeoMarine Salt per gallon of RODI water and adjust as necessary by adding more salt or water to reach desired specific gravity. Allow the freshly made seawater to mix for 24…

    $73.99 Regular Price: $

    …55 Gallon Mix* - Bucket * 175 Gallon Mix* - Bucket * 200 Gallon Mix* - Bulk Sack   *When mixed to 1.021 specific gravity.   Unlike the natural reef environment, which has an immeasurable reservoir of all 57 elements, a reef aquarium is an artificial…

    $27.99 Regular Price: $

    …in keeping your calcium and alkalinity levels steady. Some reactors require on a pressurized chamber where the Avast reactors do not. They rely on gravity draining, which is much safer and reliable. Pressurized reactors are prone to leaks which can easily damage and stain floors, which makes the K2…

    $279.99 Regular Price: $

    …Accepts common 1/4" OD RO tubing * Use with Skimz Sulpur-NO3 Media * Rated for tanks up 264 gallons (1000 Liters) * Method of feeding: Gravity or Feed Pump * Feed Rate: 79-132 GPH (300-500 LPH) * Pump: Skimz E1150 * Total Watts: 25W Skimz Manufacturer's Manual …

    $351.99 Regular Price: $

    …liters of fluid for a total storage volume of 4 liters * Connects directly to your DOS dosing system * Engineered with a low center of gravity to help avoid tips and spills * Optical sensors provide real-time fluid levels to the Apex Fusion dashboard * Easily removable lids to…

    $199.95 Regular Price: $
    Out of Stock

    …the mixture is fully dissolved and clear, start measuring the specific gravity with a refractometer or similar instrument. Keep adding small amounts of salt until the specific gravity is the value you desire. The specific gravity of the sea salt solution should range from 1.025 to 1.027 (at 73-77…

    $40.95 Regular Price: $

    …  Don’t use in heavy duty applications like sewage pumps.   Great for water. Check your fluid's specific gravity.   The wires complete a circuit when the float is down. You can reverse the operation by removing the clip, turning the float…

    $15.99 Regular Price: $

    …CO2 to recirculate via the circulation pump * Space for pH probe * Easily fill additional media * Method of feeding: Feed pump or gravity   Reactor Specifications: * Body Diameter: 4.72" (120mm) * Holds roughly 7.28 pounds of media * Foot Print:…

    $384.99 Regular Price: $

    …between the three common salinity measurements: * ppt - parts per thousand * PSU - practical salinity units * S.G. - specific gravity    Range * 0.0 to 70.0 ppt (g/L) * 0.0 to 70.0 PSU * 1.000 to 1.041 S.G. Resolution *…

    $69.00 Regular Price: $

    …the mixture is fully dissolved and clear, start measuring the specific gravity with a refractometer or similar instrument. Keep adding small amounts of salt until the specific gravity is the value you desire. The specific gravity of the sea salt solution should range from 1.025 to 1.027 (at 73-77…

    $43.17 Regular Price: $

    …provides an exact and reliable measurement of specific gravity, and it never needs to be re-calibrated, so it's a perfect reference device for calibrating other equipment. * High precision hydrometer for determining the specific gravity in aquariums * Maximum deviation: 0.001 at…

    $31.25 Regular Price: $
    Out of Stock

    …Adjustable Speed Magnetic Stirrer * Push-Connect Fittings * Made of PVC and Acrylic * Quick-Fill Cap For Adding Kalk * Gravity Drain System For Consistent Doses * Sealed Environment Keeps the Kalkwasser Potent    Perfect for Reef Tanks…

    $329.99 Regular Price: $

    …in keeping your calcium and alkalinity levels steady. Some reactors require on a pressurized chamber where the Avast reactors do not. They rely on gravity draining, which is much safer and reliable. Pressurized reactors are prone to leaks which can easily damage and stain floors, which makes the K1…

    $229.99 Regular Price: $

    …Available: * 55 Gallon Mix* - Bucket * 175 Gallon Mix* - Bucket * 200 Gallon Mix* - Bulk Sack *When mixed to 1.021 specific gravity.    Element Levels @ 35.5 PPT * pH: 8.2 - 8.4 * Alkalinity: 7.8 - 8.2 DKH * Calcium: 420 - 440…

    $26.99 Regular Price: $

    …CO2 to recirculate via the circulation pump * Space for pH probe * Easily fill additional media * Method of feeding: Feed pump or gravity   Reactor Specifications: * Body Diameter: 5.9" (150mm) * Holds roughly 11.9 pounds of media * Foot Print:…

    $516.99 Regular Price: $

    Use the Water Valve from Tunze to connect to the Tunze Osmolator - the water valve replaces the pump with an electrically operated solenoid. Use it to control the flow of water from a tube rather than pumping it from a container like gravity-fed auto top off system.   Max Water…

    $89.99 Regular Price: $

    …To achieve a salinity level of 35 ppt, dissolve one half cup for every gallon of water in a container, stirring continuously. The specific gravity of the solution should be 1.025 to 1.027 at a temperature of 77 °F. The prepared saltwater can be used as soon as the salt is fully dissolved. …

    $48.99 Regular Price: $

    …with invertebrates. Wait for each spoonful to dissolve completely before adding the next.   Check the aquarium waters specific gravity on a regular basis as this may gradually increase over time with the addition of Tropic Marin Bio-Magnesium. This is easily counteracted with regular…

    $15.84 Regular Price: $

    …CO2 to recirculate via the circulation pump * Space for pH probe * Easily fill additional media * Method of feeding: Feed pump or gravity   Reactor Specifications: * Body Diameter: 7.87" (200mm) * Holds roughly 26.5 pounds of media * Foot Print:…

    $649.99 Regular Price: $

    …CO2 to recirculate via the circulation pump * Space for pH probe * Easily fill additional media * Method of feeding: Feed pump or gravity   Reactor Specifications: * Body Diameter: 7.87" (200mm) * Total Height: ~40” (1016mm) * Feed Inlet:…

    $899.99 Regular Price: $

    …the growth of anaerobic bacteria as it oxidizes the sulfur. * Rated for tanks up 396 gallons (1500 Liters) * Method of feeding: Gravity or Feed Pump * Feed Rate: 132-264 GPH (500-1000 LPH) * Pump: Skimz E2000 * Total Watts: 31.5W * Hold up to 5.5 L of media …

    $461.99 Regular Price: $

    …Adjustable Speed Magnetic Stirrer * Push-Connect Fittings * Made of PVC and Acrylic * Quick-Fill Cap For Adding Kalk * Gravity Drain System For Consistent Doses * Sealed Environment Keeps the Kalkwasser Potent    Perfect for Reef Tanks…

    $379.99 Regular Price: $

    CaribSea’s LifeRock Reef Tree kit provides the materials you need to create incredible aquascapes faster and easier than you would have thought possible. Wow your friends and family with rockscapes that turn natural-looking reef rock into gravity-defying, awe-inspiring structures. Don't worry…

    $199.99 Regular Price: $
    Out of Stock

    CaribSea’s South Sea’s Coral Tree kit provides the materials you need to create incredible aquascapes faster and easier than you would have thought possible. Wow your friends and family with rockscapes that turn natural reef rock into gravity-defying, awe-inspiring structures. The Coral…

    $159.99 Regular Price: $

    CaribSea’s LifeRock Coral Tree kit provides the materials you need to create incredible aquascapes faster and easier than you would have thought possible. Wow your friends and family with rockscapes that turn natural-looking reef rock into gravity-defying, awe-inspiring structures. The Coral…

    $212.99 Regular Price: $
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