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    …right overflow for your tank can be confusing but it is a pretty simple formula, just take the total flow produced by your return pump and select an overflow that can handle that overall flow rate, and still be able to fit inside of your aquarium. In most cases, we will recommend using an overflow

    $145.99 Regular Price: $

    Fiji Cube's unique design takes low-profile overflows to the next level!   We were immediately impressed by the thoughtful design and unique features of Fiji Cube's overflow boxes. The wet side overflow box is among the slimmest on the market, but what really sets it apart is the ease…

    $99.99 Regular Price: $
    Out of Stock

    …gallon tank) * RSS18 - 12 1/2" L x 4" W x 5 1/4" H (Up to 200 gallon tank) * RSS24 - 18 5/8" x 4" W x 5 1/4" H (Up to 300 gallon tank)   When choosing an overflow we suggest using the largest overflow box that will fit your tank. It is impossible to oversize an overflow.

    $49.99 Regular Price: $

    …RSS18DX - 12 1/2" L x 4 1/4" W x 5 1/4" H (Up to 200 Gallon tank) * RSS24DX - 18 5/8" x 4 1/4" W x 5 1/4" H (Up to 300 Gallon tank)   When choosing an overflow we suggest using the largest overflow box that will fit your tank. It is impossible to oversize an overflow.

    $62.99 Regular Price: $

    …right overflow for your tank can be confusing but it is a pretty simple formula, just take the total flow produced by your return pump and select an overflow that can handle that overall flow rate, and still be able to fit inside of your aquarium. In most cases, we will recommend using an overflow

    $158.99 Regular Price: $

    Fiji Cube's unique design takes low-profile overflows to the next level!   We were immediately impressed by the thoughtful design and unique features of Fiji Cube's overflow boxes. The wet side overflow box is among the slimmest on the market, but what really sets it apart is the ease…

    $134.99 Regular Price: $
    Out of Stock

    overflow and a return system in one! Made out of thick molded plastic that is 100% reef safe, adding an overflow for a sump to your tank is now easier than ever! * Max Flow up to 660 GPH * Great for nano tanks * Installs in minutes * Molded barb fittings * Overflow and…

    $99.11 Regular Price: $

    A built-in overflow is the most efficient method of draining aquarium water to a filter. If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters are the best means for getting water from an aquarium to a filter system. CPR Continuous Siphon Overflows are used to…

    $264.99 Regular Price: $

    Add an overflow to any aquarium with Eshopps PF series of hang on back overflows. Adding a sump to a tank will allow you to hide equipment and while adding water volume making your tank more stable. Traditional overflows require you to drill holes in your aquarium where Eshopps PF HOB overflows use…

    $112.99 Regular Price: $

    …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 your water crystal clear.    The overflow box easily mounts to any aquarium with its magnetic mount. It…

    $149.99 Regular Price: $

    …right overflow for your tank can be confusing but it is a pretty simple formula, just take the total flow produced by your return pump and select an overflow that can handle that overall flow rate, and still be able to fit inside of your aquarium. In most cases, we will recommend using an overflow

    $132.99 Regular Price: $
    Out of Stock

    Prevents fish snails and other tank inhabitants from getting sucked into your plumbing, sump or pump and subsequent damage. Slip Bulkhead Strainers: * Slip Bulkhead Strainer * " Slip Bulkhead Strainer * 1" Slip Bulkhead Strainer Thread Bulkhead Strainers:…

    $1.99 Regular Price: $

    Add an overflow to any aquarium with Eshopps PF series of hang on back overflows. Adding a sump to a tank will allow you to hide equipment and while adding water volume making your tank more stable. Traditional overflows require you to drill holes in your aquarium where Eshopps PF HOB overflows use…

    $126.99 Regular Price: $

    …and manufacturers of check valves, these valves create minimal pressure loss. They are commonly used on return pump outputs to prevent water overflowing the sump in the event of a power outage, pump failure or maintenance. * Slip x Slip * True union connection can be screwed and…

    $16.99 Regular Price: $

    A built-in overflow is the most efficient method of draining aquarium water to a filter. If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters are the best means for getting water from an aquarium to a filter system. They quietly skim up to six times more water…

    $229.99 Regular Price: $

    …that you will have enough to complete the aquascape you are looking for, any extra rock can always be broken up and placed in your refugium, overflows, and sump for added filtration.   What's Included? 20lbs CaribSea LifeRock Arches   Shipping: Branch rock…

    $149.99 Regular Price: $

    …Filter is perfect for rimless aquariums up to 30 gallons that are a minimum of 10.5" high. The internal 3 stage filtration includes a built in overflow that will help skim the top of your tanks water column and then into the filter cartridge. The filter cartridge includes mechanical filtration…

    $29.99 Regular Price: $

    …the first thing you will notice is the crystal clear glass and elegant beveled edges. The second thing you may or may not notice is the slim overflow that houses all the drain and return plumbing to keep the water a constant level within the display tank and surface skimming while being super…

    $2,585.00 Regular Price: $

    Low profile strainer that extends fractions of an inch past the bulkhead itself. Prevents fish, snails, and other tank inhabitants from getting sucked into your plumbing, sump or pump and subsequent damage.   * Slip Low Profile Strainer - Used to slip inside of a slip…

    $2.99 Regular Price: $

    …Octopus has thought one step farther than the competition integrating a float switch into the collection cup, protecting from potential messy overflows.   Note: A feed pump is required that can flow around 1.5 - 2 times the systems volume. We suggest a pump around 600-1000 GPH,…

    $844.99 Regular Price: $

    Add an overflow to any aquarium with Eshopps PF series of hang on back overflows. Adding a sump to a tank will allow you to hide equipment and while adding water volume making your tank more stable. Traditional overflows require you to drill holes in your aquarium where Eshopps PF HOB overflows use…

    $169.99 Regular Price: $

    …built-in overflow is the most efficient method of draining aquarium water to sump filtration. If your aquarium does not have built-in overflow, CPR Continuous Siphon Overflows/Prefilters are the best means for getting water from an aquarium to a filter system. CPR Continuous Siphon Overflows are…

    $274.99 Regular Price: $

    Oceans Wonders MAG Disks allow you to secure coral frags to tank sides. Bring new dimension to your tank by mounting frags on your back walls, overflows. and sidewalls. Oceans Wonders Mad Disks are a magnetic frag disk that lets you securely mount corals in spots you never thought would be possible.…

    $15.99 Regular Price: $

    An overflow or a leak from an aquarium or it's equipment can cause a huge mess if not caught right away. The Watchdog is a stand alone leak detection alarm that will give a very loud audible alarm in the event water comes in contact with its sensor pads. It is extremely sensitive and we…

    $12.99 Regular Price: $

    …things an overflow can damage paying a few extra bucks for quality safety precautions can save a lot of money down the line. Swiss-made check valves allow one directional water flow and are used to prevent back siphoning. Commonly used on return pump outputs to prevent water overflowing the…

    $43.99 Regular Price: $

    …for strength and durability.   Features * Slim-Flow system – slim integrated overflow and water reservoir preserve overall aesthetics of the tank * Overflow along the entire length of tank for better water circulation * Low iron glass allowing crystal clear view…

    $1,425.00 Regular Price: $

    …that you will have enough to complete the aquascape you are looking for, any extra rock can always be broken up and placed in your refugium, overflows, and sump for added filtration.   What's Included? CaribSea Original LifeRock    Shipping: All rock…

    $86.99 Regular Price: $

    …Thick Low Iron Glass * Flare Nozzle Returns * Mesh Screen Pro Lid Included * Pre-Installed Rubber Leveling Mat * Built-In Acrylic Overflow Wall   Innovative Marine Lagoon Aquarium series gives you a shallow lagoon style aquarium that is perfect for a mixed reef…

    $599.99 Regular Price: $

    …the first thing you will notice is the crystal clear glass and elegant beveled edges. The second thing you may or may not notice is the slim overflow that houses all the drain and return plumbing to keep the water a constant level within the display tank and surface skimming while being super…

    $2,799.00 Regular Price: $

    Why does BRS recommend this? One of the biggest devastating accidents with an aquarium can be a leak or overflow.  An overflowing tank or leaking piece of equipment can cause a ton of damage especially if you have nice floors around the tank.  The ALD module will hook directly up to…

    $29.95 Regular Price: $

    Fiji Cube's unique design takes low-profile overflows to the next level!   We were immediately impressed by the thoughtful design and unique features of Fiji Cube's overflow boxes. The wet side overflow box is among the slimmest on the market, but what really sets it apart is the ease…

    $199.99 Regular Price: $

    …or may not notice is the slim overflow that houses all the drain and returns plumbing to keep the water a constant level within the display tank. The return nozzle is fully adjustable to direct the flow where you need it, and the dual drain system keeps overflows from happening like a single drain…

    $4,799.00 Regular Price: $