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    …three probes. The two outside holes are 0.63” in diameter and the center hole is 0.8” in diameter to fit different sized probes. Hose Holder All Sapphire sumps also come with 4 holes in the top support brace for holding in place 1/4” OD tubing from reactors, dosing pumps, ATO, etc.

    $428.99 Regular Price: $

    …pump from the controller and plug in the solenoid. It is that easy. The solenoid works in conjunction with the ATO controller and sensor to allow the flow of RODI water to your sump and when the water level is replenished the sensor will tell the controller to shut off power to the solenoid to…

    $22.99 Regular Price: $

    …three probes. The two outside holes are 0.63” in diameter and the center hole is 0.8” in diameter to fit different sized probes. Hose Holder All Sapphire sumps also come with 4 holes in the top support brace for holding in place 1/4” OD tubing from reactors, dosing pumps, ATO, etc.

    $470.99 Regular Price: $

    …the clear slurry is being dosed. Step 5. Activate your ATO and monitor the pH of your aquariumas the kalkwasser solution is being dosed, not exceeding increases of 0.20 pH. Your ATO should be pumping water into a high flow area of your sump or display tank to help prevent precipitation. Adding…

    $38.99 Regular Price: $
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    …Reef Sumps combine solid build quality and practical features at a price point that any hobbyist can appreciate. Providing a simple, open design with ample space for your return pump and skimmer, as well as adjustable baffles with holders and a built-in ATO reservoir, Ice Cap sumps have the…

    $268.79 Regular Price: $335.99
    Out of Stock

    …down into the sump in the event that the main drain gets clogged. If plumbing is one of the reasons why you have never wanted to install a tank with a sump dont worry as Red Sea has done all the planning for you and there is no gluing needed to assemble and seal all the plumbing. The sump includes a…

    $4,279.00 Regular Price: $

    …breeze. By having them hooked up to reactors, pumps, and water change hoses you can easily use the same pump that runs your reactor to drain your sump for a water change. The interchangeable sizes make them really handy for endless applications around the reef tank. Polypropylene High Flow Patented…

    $6.99 Regular Price: $
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    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $124.99 Regular Price: $

    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $129.99 Regular Price: $

    …configurations Visual LED signals 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…

    $92.00 Regular Price: $

    Xp Aqua's Sumpless ATO - Complete ATO & Surface Skimmer for Sumpless Aquariums Sumpless ATO is the first and only ATO designed specifically for 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…

    $149.99 Regular Price: $

    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $189.99 Regular Price: $

    Matches Trigger Triton Sumps Triton ATO reservoirs feature crystal clear acrylic with an elegant sapphire blue top, to hold top off water for your aquarium in a closed container. The Trigger Systems ATO containers have a removable lid to prevent excess evaporation while providing a large opening to…

    $139.99 Regular Price: $
    Out of Stock

    …breeze. By having them hooked up to reactors, pumps, and water change hoses you can easily use the same pump that runs your reactor to drain your sump for a water change. The interchangeable sizes make them really handy for endless applications around the reef tank. Polypropylene High Flow Patented…

    $6.99 Regular Price: $
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    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $182.99 Regular Price: $

    …need to be replenished. With additional accessories, you can unlockfeatures like auto water changes, provisions for magnetic stirrers, and even an ATO functions. GHL has even gone a step further making their illuminated logo on top of the dosing unit change colors as status transitions, letting you…

    $469.90 Regular Price: $

    …breeze. By having them hooked up to reactors, pumps, and water change hoses you can easily use the same pump that runs your reactor to drain your sump for a water change. The interchangeable sizes make them really handy for endless applications around the reef tank. Polypropylene High Flow Patented…

    $12.99 Regular Price: $
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    …breeze. By having them hooked up to reactors, pumps, and water change hoses you can easily use the same pump that runs your reactor to drain your sump for a water change. The interchangeable sizes make them really handy for endless applications around the reef tank. Polypropylene High Flow Patented…

    $16.99 Regular Price: $
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    …1 year What's Included? Octo LUX T60 Aquarium Octo LUX Cabinet Stand Integrated Slim Overflow System Auto UP Reservoir Reef Octopus PVC Sump with Filter Sock ATO Float Valve AQ-2000 Return Pump Reef Octopus Classic 110INT Protein Skimmer Warranty 1 year for tank and cabinet 2 years for pump

    $1,496.25 Regular Price: $
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    …three probes. The two outside holes are 0.63” in diameter and the center hole is 0.8” in diameter to fit different sized probes. Hose Holder All Sapphire sumps also come with 4 holes in the top support brace for holding in place 1/4” OD tubing from reactors, dosing pumps, ATO, etc.

    $358.99 Regular Price: $

    …bracket in each sump, which takes the hassle and concern of proper heater mounting in the sump out of the equation. Of course, they also include plenty of room for equipment such as skimmers and reactors and as well as a refugium-ready design for larger sump sizes, so all modern sump needs are met.…

    $499.99 Regular Price: $

    …your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto-top-off), as a high-level warning sensor in your sump, water storage level sensor, and much more. The sensors can be mounted on any type of reservoir that has up to 1/4"…

    $34.95 Regular Price: $

    …time and go with an Octo Reef sump. Their meticulous craftsmanship and hobbyist-minded features ensure this will be a sump you can be proud of. Specifications Dimensions:35.83"L x 18.11"W x 15.75"L Skimmer Section:16.97"L x 16.14"W Return Pump Section:11.8"L x 8.6"W ATO Volume:6.6 gallons Adjustable…

    $629.99 Regular Price: $

    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $129.99 Regular Price: $

    …Reef Sumps combine solid build quality and practical features at a price point that any hobbyist can appreciate. Providing a simple, open design with ample space for your return pump and skimmer, as well as adjustable baffles with holders and a built-in ATO reservoir, Ice Cap sumps have the…

    $386.39 Regular Price: $482.99

    …breeze. By having them hooked up to reactors, pumps, and water change hoses you can easily use the same pump that runs your reactor to drain your sump for a water change. The interchangeable sizes make them really handy for endless applications around the reef tank. Polypropylene High Flow Patented…

    $9.99 Regular Price: $
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    …in each sump, which takes the hassle and concern of proper heater mounting in the sump out of the equation. Of course, they also include plenty of room for equipment such as skimmers, reactors, and return pumps, so all modern sump needs are met. You'll also find a polycarbonate sump cover with…

    $259.99 Regular Price: $

    …for holding a fixed amount of top off water. An appropriately sized ATO reservoir would be able to supply your tanks ATO needs for a few days if not weeks, while not being too large to cause a big salinity swing or flood the sump if the top off pump were to get stuck on. Most auto top off units will…

    $189.99 Regular Price: $

    …bracket in each sump, which takes the hassle and concern of proper heater mounting in the sump out of the equation. Of course, they also include plenty of room for equipment such as skimmers and reactors and as well as a refugium-ready design for larger sump sizes, so all modern sump needs are met.…

    $299.99 Regular Price: $

    …features of the Sapphire sumps are: Interchangeable plates (PAT PENDING) Lid to prevent splashing Adjustable water height Self-adjusting foam block platform (PAT PENDING) Dual platforms Cable/Hose organizers Protein skimmer section Refugium section Quick-connect dosing & ATO tubes Four-position…

    $619.99 Regular Price: $

    …bracket in each sump, which takes the hassle and concern of proper heater mounting in the sump out of the equation. Of course, they also include plenty of room for equipment such as skimmers and reactors and as well as a refugium-ready design for larger sump sizes, so all modern sump needs are met.…

    $399.99 Regular Price: $

    …three probes. The two outside holes are 0.63” in diameter and the center hole is 0.8” in diameter to fit different sized probes. Hose Holder All Sapphire sumps also come with 4 holes in the top support brace for holding in place 1/4” OD tubing from reactors, dosing pumps, ATO, etc.

    $578.99 Regular Price: $