Customer Reviews
  1. great
    Performance
    100%
    Worked great for my nano tank. was out of town 10 days and not one problem

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  2. Great Product
    Performance
    100%
    Installed in a half hour works great on my biocube 29 keeps water level constant no problem

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  3. Works like a charm!
    Performance
    100%
    Installed this ATO on a Biocube 29. I had a little bit of an issue with the pump not shutting off properly after my initial install. After a short conversation with Tunze customer service we determined the switch was being interfered with by the magnet from my Tunze 9002 skimmer. I moved the switch to the other side of the return chamber away from the skimmer magnet, and it works like a charm!

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  4. Good
    Performance
    80%
    I am satisfied with the Tunze product

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  5. Best ATO purchase
    Performance
    100%
    I love this ATO easy to put anywhere either in sump or in your tank. I love that it had magnets not suction cups that easily fall of and can dump water into your sump. I also, love that it includes its own pump without the need to purchase one and the replacement its cheap aswell.

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  6. Ok product, but be careful
    Performance
    60%
    After almost flooding my basement twice and contacting Bulk reef supply; I was contacted by Tunze technician and he worked with me to fix my problems. When attaching switch with magnet onto sump glass the maget affects the switch if the glass is too thin. I needed to shim between the two magnets for the switch to work properly. Also, be aware of creating a siphon from reservior to were your supplying ATO water. As far as quality; You get what you pay for...

    Pros- works as advertised.

    Cons- doesnt come with clear instructions

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  7. Excellent ATO
    Performance
    80%
    I just installed this in a Nuvo 24 and it's working excellent to keep my water level exactly where I want it. The pump can fit right into a 5 gallon polyurethane jug without modification, which is really nice if you don't have a special RO Reservoir. It was easy to assemble and install and the pump is quiet enough to not bother my wife.

    My only two complaints of this system: I wish the control box had tabs to mount with screws to the interior of my stand and I would love for the control box to have some kind of LED that either indicates the unit is powered or that the pump is on. I feel like for the price a single LED in the control box isn't a crazy expectation. Other than that it's an excellent product.

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  8. Great product
    Performance
    100%
    We'll built . It got to me very speedy with great shipping and packaged well. Works like a charm I will deff be getting another

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  9. Great product from Tunze, no surprise there.
    Performance
    80%
    works flawlessly. Only regret is not getting the bigger model with two sensors. the 5 second time out feature is great piece of mind however.

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  10. Perfect for my Nano tank
    Performance
    100%
    No issues so far. I installed this in an 8-gallon tank so I am especially happy for the auto-cutoff. Seems pretty solid!

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