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    …and quiet flow, as well as an emergency drain for added safety.     Features: Ultra-clear low iron glass Beveled edges Black silicon Rubber leveling mat Removable black film on back glass Low profile and slim overflow box design Silent and safe “Herbie” overflow design Removable inner overflow…

    $349.99

    …most cases.  By placing a single sheet of Neoprene Foam in-between the tanks glass/acrylic and stand, that will dampen any pressure points to make a level and even surface for the tank to rest on.  1/8 inch thick Closed Cell Neoprene Foam Easily cuts with razor blade for a professional looking edge…

    Starting at:
    $32.99

    Leveling adhesive mats are used under glass or acrylic tanks to make a super smooth surface and relieve any small stress points that may be on the surface the tank will rest on. With the adhesive backing you can place the mat directly to the tanks bottom to keep it from sliding around for final…

    Starting at:
    $19.99

    …the wires completely out of water.   Recommended for water applications like level controllers, auto top off (ATO) systems or other aquarium uses.    Deluxe Madison Float Switch is great for: General water level control application Aquarium top-off applications Humidification/de-humidification…

    $20.99

    …go to sensor if you want a reliable sensor over a long period. The Neptune Optical Sensor plugs directly into the FMM allowing you to monitor the level of your sump, mixing station, or any other reservoir with liquid in it.   This sensor plugs into your FMM and, using reflected infrared light, will…

    $24.95

    …cracked, damaged, crazed, or just plain dirty Skimz components with genuine Skimz replacement parts! Level controllers for In-Sump skimmers do not include adjustment knob, only the gate.   Skimz Level Controller Sizes  Your Skimmer  Skimz Model Number  BRS SKU SM121 TSB001 208771 SM161 or SM163…

    Starting at:
    $21.59

    It is not common but if you ever need a replacement level switch for your Theiling Compact Rollermat we have you covered. This is the OEM replacement level switch for the Compact Rollermat and only takes a few minutes to replace.    What's Included? 1x Replacement Compact Rollermat Level Switch

    $11.99

    …sensor if you want a reliability over a long period of time. The Neptune Optical Sensor plugs directly into the FMM allowing you to monitor the level of your sump, mixing station, or any other reservoir that has up to 1/4" thick walls.   Includes Magnetic Mount   This sensor plugs into your FMM…

    $34.95

    …AutoAqua's Smart Level Sensor will cut power to the outlet when the sensor detects a change in water level. The plug & play design requires no difficult programming and the magnetic attachment makes placement and adjustments of the level sensor quick and easy. The Smart Level can be used as either…

    $59.99

    …crazed, or just plain dirty Skimz components with genuine Skimz replacement parts. Level controllers do not include gate, only include the knob and threaded rod. Skimz Replacement Level Knob Fitment Table Level Control Knob  Skimz Skimmer or Sump Model SKU TSL001 SM121 209423 TSL002 SM161 SM163…

    Starting at:
    $9.59

    …Includes float switches and brackets   Float Sensors The A.T.O. is equipped with (2) float sensors that activate within seconds when your water level drops and automatically refills your sump or tank until it reaches your desired set point. Each float sensor has been designed with an exterior guard…

    $84.99

    Replacement float switch bracket for Theiling Roller Mat's level switch. If your Theiling Roller Mat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $4.49

    Replacement float switch grommet for passing wiring through the Rollermat housing. If your Theiling Roller Mat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $2.49

    …Product Guide   Potassium is one of the major elements in seawater and natural levels are very similar to calcium levels, 380-410mg/liter. While not consumed as quickly as calcium, it is important to maintain appropriate levels to achieve ideal coral coloration and growth. KZ tests have shown tanks…

    Starting at:
    $23.99

    …Guide   Potassium is one of the major elements in seawater and natural levels are very similar to that of calcium levels, 380-410mg/liter. While not consumed as quickly as calcium, it is important to maintain appropriate levels to achieve ideal coral coloration and growth. KZ tests have shown tanks…

    Starting at:
    $18.99

    Replacement float level switch for the Theiling Rollermat. If your Theiling Rollermat has any parts that are damaged, worn, or you simply just want to keep an extra on hand we carry OE Theiling replacement parts.

    $19.99

    Max Tank Thickness - 1/2"   The VeggieMag uses a strong magnet to hold your SeaVeggies clip in place on windows up to 3/4” thick. Easy to position at any level in the aquarium and easy to retrieve because it floats.

    $20.94

    …consumed by all corals and most marine invertebrates to create a calcium carbonate structure, and over time the alkalinity level in your aquarium may drop below proper levels. In almost all reef tanks a calcium and alkalinity dosing regime will need to be implemented (also known as 2-part dosing)…

    $52.00

    …is used by all corals and most marine invertebrates to create a calcium carbonate structure, and over time the calcium level in your aquarium may drop below proper levels. In almost all reef tanks a calcium and alkalinity dosing regime will need to be implemented (also known as 2-part dosing)…

    $52.00

    …magnesium is required to keep a super-saturated level of calcium and carbonates in solution. If you find you are having trouble keeping your alkalinity or calcium levels where you want them, you may be low on magnesium and magnesium to recommended levels will help keep those in solution. Regular…

    $17.99

    …alkalinity levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your alkalinity levels are dropping slowly we suggest raising your daily dose by 10% per day.    Example for 100-gallon aquarium: Alkalinity Level Day 1 @ 8pm - 9.0 dKH (desired level) Alkalinity Level Day…

    $7.49

    …alkalinity levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your alkalinity levels are dropping slowly we suggest raising your daily dose by 10% per day.    Example for 100-gallon aquarium: Alkalinity Level Day 1 @ 8pm - 9.0 dKH (desired level) Alkalinity Level Day…

    $22.99

    …alkalinity levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your alkalinity levels are dropping slowly we suggest raising your daily dose by 10% per day.    Example for 100-gallon aquarium: Alkalinity Level Day 1 @ 8pm - 9.0 dKH (desired level) Alkalinity Level Day…

    $99.99

    …animals. A basic dosage of 1 level measuring spoon per 50 US Gal./190 l every two weeks is recommended. In an aquarium with a high population, the dosage can be as much as 1 level measuring spoon per 50 US Gal./190 l each week.   When using the enclosed dosage spoon, level the Bio-Strontium with the…

    $13.17

    …reactor, the biggest challenge can be keeping the magnesium level stable.  Anytime Bulk Reef Supply sets up a calcium reactor the ZEOmag Magnesium Granulate will be added with the calcium reactor media to keep the systems magnesium level as stable as possible. ZEOmag is a magnesium granulate…

    $28.99

    …  Instructions: 2 tsp of solution increases the magnesium level in 27 gallons of water by 5 ppm. It is suggested to start with a dose of 5mL per 27 gallons of aquarium water daily. After each dose, test your aquarium's magnesium level and adjust dosage as necessary for your systems requirements.…

    Starting at:
    $9.99

    …W x 8.5" H Labeled for Calcium Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube   Specifications: Dimensions - 9.25" L x 2.375" W x 8.5" H Total Volume - 2 Liters   What's Included? 1x Calcium Dosing Container 1x Level Sensor Assembly 1x Sensor Bracket

    $14.99

    …x 8.5" H Labeled for Magnesium Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube   Specifications: Dimensions - 9.25" L x 2.375" W x 8.5" H Total Volume - 2 Liters   What's Included? 1x Magnesium Dosing Container 1x Level Sensor Assembly 1x Sensor Bracket

    $14.99

    …8.5" H Labeled for Alkalinity Solutions 2 Liter Volume Slim Space Saving Design Includes Level Sensor  Includes Intake Tube   Specifications: Dimensions - 9.25" L x 2.375" W x 8.5" H Total Volume - 2 Liters   What's Included? 1x Alkalinity Dosing Container 1x Level Sensor Assembly 1x Sensor Bracket

    $14.99

    …through a biological process forming their hard skeletons. Regular testing of alkalinity levels is significant for any saltwater tank, especially in coral reef tanks, along with calcium and magnesium levels.    Specifications:  Testing Range - Unlimited Type of Test - Titration Total Number of Tests…

    $12.99

    …alkalinity levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your alkalinity levels are dropping slowly we suggest raising your daily dose by 10% per day.    Example for 100-gallon aquarium: Alkalinity Level Day 1 @ 8pm - 9.0 dKH (desired level) Alkalinity Level Day…

    $23.99

    …alkalinity levels are slowly rising, we suggest subtracting 10% per day until it is stable. If your alkalinity levels are dropping slowly we suggest raising your daily dose by 10% per day.    Example for 100-gallon aquarium: Alkalinity Level Day 1 @ 8pm - 9.0 dKH (desired level) Alkalinity Level Day…

    Starting at:
    $7.49