My Cart (0 items)
Tunze Osmolator Nano 3152 ATO
Click on image to zoom
View full size image

More Views

  • Tunze Osmolator Nano 3152 ATO

Tunze Osmolator Nano 3152
Auto Top Off

SKU: 202331


  • Pretty OK By Benjamin on 4/10/14

    After avoiding a couple of floods when i first hooked it up, i think i finally have it dialed in. If the glass on where you are placing it, make sure to use a spacer, as the magnet affects the float. directions could be clearer about this. after I got it going correctly, i love it.
  • great By chuck on 3/24/14

    Worked great for my nano tank. was out of town 10 days and not one problem
  • Great Product By reefer63 on 1/29/14

    Installed in a half hour works great on my biocube 29 keeps water level constant no problem
  • Works like a charm! By 08TRDOFFROAD on 12/16/13

    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!
  • Good By C on 12/13/13

    I am satisfied with the Tunze product
  • Best ATO purchase By Oscar on 11/26/13

    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.
  • Ok product, but be careful By Nano Pete on 11/26/13

    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
  • Excellent ATO By Michael on 11/25/13

    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.
  • Great product By Bobo on 11/24/13

    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
  • Great product from Tunze, no surprise there. By Andrew on 11/2/13

    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.

Write Your Own Review

You're reviewing: Tunze Osmolator Nano 3152 Auto Top Off