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Tunze Osmolator Universal 3155 Auto Top Off

Tunze Osmolator Universal 3155 Auto Top Off
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  • Tunze Osmolator Universal 3155 Auto Top Off
  • Tunze Osmolator 3155

Tunze Osmolator Universal 3155 Auto Top Off

SKU: 202307
235 Review(s)
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  • Mixed feelings By Wolfentank on 5/16/2015

    I've been using one of these for about 8 months or so, and I can't say that I love it or hate it. It's possible that my unit may have a defect as it will occasionally over fill and trigger the emergency alarm. At the same time I had a cheap $10 float switch/dosing pump set up on a nano tank that was flawless. Overall, this is a pretty good ATO and I do like the alarms. I wish it had some kind of switch to turn it off/on for when I'm doing water changes though.
  • Worth every dime! By Gerry on 5/14/2015

    The $200 dollar price tag is a little hard to swallow... But the peace of mind is completely worth it. Even though the instructions were a little hard to decipher because their English was badly translated(at least for me it was) the set up was simple and quick.
    I did have a defect with the laser eye but BRS was super quick on getting squared away.
  • Wish everything was this easy. By jon on 4/27/2015

    drop it in tank. connect a few wires. fill container. set optical level. done...
    only issue i had i had to call to figure out where the sensor picked up its not the tip its the beginning of the cone. has multiple sensor options and fail safes. highly recommend.
  • would recommend this product to a friend and reefer By Frank on 4/27/2015

    This is my 2nd one have two tanks 90 gallon and 180 gallon on my 180 Gallon have been running the 1st one for over two years now and have not one issue the best thing out there, I have used, different ATO but this is the one everyone should go with. ALL REEFERS THIS MUST HAVE save you lot of time. Just set it up keep water in the pump unit that you used and walk away.
  • Perfect..!! By Dinoflagellates on 4/23/2015

    I should bought this ATO a year ago an forget the daily top of. This set is all I needed for my 150 gal reef aquarium..!
  • Worth the price By Andrew on 4/19/2015

    I got this ATO unit to replace an old JBJ unit I had on my 55 gallon. What a step up in quality. I really like the 2 sensors; the laser sensor to measure and monitor water level for the ATO and the float level for backup to prevent overfilling. Works like a champ! This unit has its own water pump which is a big plus. Made by Tunze in Germany. Build quality and engineering of a BMW.
  • Would recommend this product to a friend By James on 4/12/2015

    I liked this ATO so well I bought a second one for a tank I have set up in another part of the house. Its simple to use and maintain. The instructions are almost too detailed, in my opinion, I had to read them several times but they are effective. I like the two different means of shut off, the electronic sensor and the float valve. BRS TV should consider a video installing one of these and setting up the electronic eye, to support the complicated instructions. Great product IME.
  • Best ato By Mike on 3/29/2015

    I pick this unit up two years ago on Black Friday and it's been running like a champ since. as the BRS YouTube video indicates the laser as well as the mechanical part of this provides a great backup is fairly easy to put together which sometimes is in the case with Tunze Products but this is been doing the job for two years.
  • Works perfectly By Chris on 3/27/2015

    I love this thing. It works perfectly and has never failed. Not much else to say than that.
  • eliminated manual topoff By Greg on 3/23/2015

    I like it So far no issues. The reviews were good. Instead or trying something I am usually using others experiences to save me the anguish of poor decisions

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