Magnetic Surface Skimmer Overflow Box for Aquaclear AC70

From: $49.99

Magnetic Surface Skimmer Overflow Box for Aquaclear AC70

From: $49.99

(6 customer reviews)

Ultra Slim Mini 50W Heater w/External Controller

Fits inside filter. Hidden from view.

Nano Aquarium Auto Top Off System MT-360P

Auto top-off evaporation.

Ship within 2-5 business days.


Oceanbox Designs™ Magnetic Surface Skimmer for Aquaclear™ AC70 HOB filter allows surface scum to be removed via surface skimming and also hide the filter intake which is usually sore eyes in your beautiful reef tank. Our innovative Embedded Magnetic Mount System™ are 100% waterproof on both tank side (wet) and dry side (external). Our super strong magnets ensure that the Surface Skimmer will hold securely in place once set. Now we can take HOB filtration to the next level, keep your tank clean and your salt critters happy.

The Aquaclear filter and Magnetic Surface Skimmer combo is great way to quickly set up a small pico/nano reef or a frag tank for which the tank can be easily put together and taken apart at will for frag swap, show, etc. Other viable setup including QT or hospital tanks are also great options to consider.


  • Remove Surface Scum (Organic Residue/Oil Film) Via Surface Skimming.
  • Strong Magnetic Mount, Quick To Install and Remove for Cleaning.
  • Hide Filter Intake Tube From View.
  • Adjustable Height To Fine Tune Overflow Level.
  • Wire Slot For Temp Probe / ATO Sensor Wire.
  • Anti-DryRun Protection on Low Overflow Water Level.
  • Premium Craftsmanship with CNC Laser Cuts Technology.
  • 100% Waterproof Magnets (Wet Side And Outside).
  • Hand-Crafted In The Great State Of Texas, USA.

Filter Compatibility:

  • Aquaclear AC70

Tank Compatibility:

  • Rimmed or Rimless Tanks.
  • Glass Thickness: Up to 8mm (5/16 in).

What Do I Need To Run This Setup?

  • As with any overflow type setup, an Auto-Top-Off system (sold separately) is required (not optional) to maintain the water level inside the overflow box. We recommenced the AUTO Aqua Smart ATO or ATO system with similar sized sensor, to be installed inside the overflow box, to keep your display water level stable from evaporation. Evaporation causes water level inside your overflow box to drop quickly and will start gurgling/bubbling as the intake suck air in, the ATO prevented this from happening.


Based on 6 reviews
5 star
4 star
3 star
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1 star
1-5 of 6 reviews
  1. PD

    I am using an AquaClear 70 on my 20 gallon reef tank. I bought this item because the intake tube did nothing to address the surface scum that always seemed to build up over time. The final straw was waking up to find my horseshoe crap stuck to the intake and struggling. Fish should be strong enough to avoid the draw of the filter, but horseshoe crabs, with their giant carapace and tiny legs are not strong swimmers. With the surface skimmer, I no longer have to worry about this happening. The magnetic mounting system is also quite awesome. I would highly recommend!

    (4) (0)
  2. JB

    First off, you really need an ATO (auto top off) to run this, or any overflow based filter for that matter. This one in particular because the overflow box is relatively small.

    I tried to use this with only the upper section of the intake tube for the AC70 (the u-shaped tube) and it pulled too much air because it wasn’t deep enough in the overflow box. I took the extension tube and cut it so it was about 1” above the bottom of the overflow box and now I can run the filter on the highest GPH.

    It’s a little tricky getting the ATO sensor in the box with the filter tube and at the right height, but once you do it works really well. Once the ATO sensor is adjusted you won’t get any more air bubbles or gurgling. It’s pretty much silent. Setup was easy thanks to the magnetic mounts, I really like this as a surface skimming solution for my cheapo Aqueon 29g.

    (0) (0)
  3. LB

    You really need an ATO for this to work.

    (0) (0)
  4. C

    Received this item and had issues from the get go. Causing the filter to sputter causing micro bubbles to flood the tank. Needless to say coral were not happy. Had to adjust the flow of the filter to all the way on its lowest setting for this to work properly. And in the middle of the night it started sputtering again and again flooding the tank with micro bubbles. It was the middle of the night so I messed with the filter flow again till it stopped but according to the manufacture this item does best with a ato system to keep the water level the same all the time.

    (0) (0)
  5. G

    Great product! Easy setup and install. I used it to add surface skimming to my quarantine/acclimation tank.

    (0) (0)

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