AF OceanGuard 790 Aquarium (155 Gallon) - Carbon


1 x AF OceanGuard 790 Aquarium (155 Gallon)   + $0.00

1 x AF OceanGuard 790 Furniture Front (Carbon)   + $0.00

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    **Special Offer** -- For a limited time, all purchases of AF OceanGuard Aquariums will include a FREE Starter Pack! No extra action is required to redeem this offer-- Simply add any Oceanguard Aquarium to your cart and your order will also include the following:



    The Aquaforest OceanGuard series of aquarium systems is the result of collaboration between the best engineers and marine aquarists in the business. From its crystal-clear OptiWhite glass to its durable waterproof cabinetry and smartly-designed cascading filtration chambers, the OceanGuard offers experience-based solutions to deliver the most optimal reefkeeping experience. 

    • Ultra-silent operation
    • Waterproof, corrosion-resistant design for marine applications
    • Tank, anti-vibrational foam mats, overflow box, plumbing, sump, and cabinet included
    • Timeless, minimalistic design with interchangeable exterior panels for easy color changes
    • Pre-assembled cabinetry constructed from marine yacht technology
    • Guaranteed B31-certified safety with 4-year warranty


    The Display Tank

    • Highest transparency OptiWhite low-iron glass
    • Durable rimless design tested by marine aquarists
    • Even glass surface with distortion-free viewing
    • Easy-to-clean and scratch-resistant
    • All-black overflow, bottom, and rear glass
    • Proprietary black silicone joints with guaranteed high water-tightness
    • Professional antivibrational foam leveling mat

    The Cabinet

    • Waterproof high-pressure, marine-grade plywood construction
    • Will not swell, absorb water, nor warp over time
    • Corrosion-resistant to salt spray and chemical residue
    • High-resistance joints with premium Japanese stainless steel hinges and A2 stainless steel screws
    • Minimalistic design with interchangeable external cabinet panels for easy color changes
    • Arrives pre-assembled for guaranteed reliability
    • Designed to withstand up to 10x the weight of competitor stands

    The Plumbing & Sump

    • Durable PVC with dedicated hydraulics
    • Increased pipe diameters for high system output
    • Smartly designed cascading filtration chambers with filter socks
    • Quick installation-- no glue required
    • Emergency pipe and quality gate valve for precise adjustment
    • Self-leveling with quiet downflow
    • Check valve to prevent water from flowing into the sump
    • Near-silent downflow




    • Aquarium - 59.1"L x 25.6"W x 23.6"H
    • Cabinet - 59.1"L x 25.6"W x 37"H
    • Sump - 35.4"L x 19.9"W x 17.7"H
      • Return Pump Chamber - 16.14"L x 4.61"W
      • Skimmer Chamber - 16.14"L x 9.21"W (12.32"W without baffle)
      • Filter Chamber - 3.94"L x 17.09"W
      • RO Chamber - 11.22"L x 17.09"W


    • Display Tank - 155 US Gallons
    • System - 209 US Gallons


    • Downpipe - 40mm
    • Return Pump - (2x) 20mm
    • Safety Drain - 32mm

    Recommended Water Flow - 1320-1585 GPH

    Recommended Skimmer - AF200 / AF200 IN

    Recommended Media Reactor - AF110 Media Reactor

    Glass Thickness - 15mm (5/8")



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    Product Questions

    Does it come with ATO
    Question by: Milt Schuster on Jun 9, 2022, 7:05 AM
    Thanks for the question! The ATO reservoir is built into the included sump. You will still need to purchase the desired top off system, like the Tunze Osmolator 3155 or Neptune ATK separately to pump water from the reservoir to the system. Let us know if we can help with anything else!
    Answer by: Kyle Thomas (BRS Staff) on Jun 9, 2022, 12:45 PM