Osmolator Universal 3155 Auto Top Off - Tunze

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

Osmolator Universal 3155 Auto Top Off - Tunze

SKU: 202307
287 Review(s)

reg. $209.99

Special Price: $199.99

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  • Great ato. Works as advertised. Pump fits in 5 gal jug By on 5/17/2016

    This top off works really well. The only thing to remember is to prime the pump but after that it runs like a champ.
  • So long to my KW drip By on 5/6/2016

    After months of setting up an evening kalkwasser drip (and often forgetting to set it up), this is a real time saver. Once a week now I fill my top-off bucket and it keeps my sump consistent and slowly doses my KW. I'm a fan.
  • You will HAVE to replace in 2 years By on 4/26/2016

    My recommend to buy is very tepid. You will only get about 2 years max out of one of these units. I really want to like it, but, the eye stops functioning after 2 years. All the cleaning of the eye will NOT make a difference. I have 1 hour to get to bed and get up in the morning for an early flight and I'm in travel he!! week, 6 flights. I can NO longer rely on this essential piece of equipment to maintain my tank. I will probably loose several SPS as a result of my jacked up tank all because this ATO failed --- AGAIN. This is the 3rd one I've bought that does this, it is NOT an isolated one off case at all. Poor quality in the long run. I will never buy again.
  • best in the market By on 4/10/2016

    I feel safe that this will not fail and works great with the Apex or without
  • No worries By on 4/5/2016

    I purchased the second one, and as for piece on mind extra pumps, one pump failure thus far. It is a good product, price but good..
  • Nice product By on 3/16/2016

    The instructions and a bit weak but I was able to look online and get the info I needed. Overall this is a bit expensive for what it is but works great. The pump is louder than I expected even though I have it turned down as far as it will go (nano setting).
  • Best out there By on 3/14/2016

    After my 1st two ato's failed (smart ato and jbj) I finally bought the tunze. It is so much better it's not even close. Wish I had bought this 1st and saved myself the $$$ and headaches.
  • Works but its very sensitive to the water level. By on 3/3/2016

    I watched the BRS youtube videos and listened to Ryan talk about how he prefers this ATO to the others on the market. I bought into the hype and bought it. I am running a neptue apex on my system and I realized after I bought this ATO, that with the Salinity probe I'm running i could have built a DIY version that would have done a better job of keeping the salinity at a set value. The osmolater is great for filling from the tank with Rodi water. But my Salinity shifts from a high 36 to a low 35 ppt rather frequently. Its best used on a system that isn't running a controler like an apex or reefkeeper. With a controler you can buld a much more consistent ATO from DIY parts.
  • Best ATO By on 2/20/2016

    This is a no brainier. Not worth the risk to buy a cheaper product.
  • Flawless By on 2/18/2016

    I've been running this for over a year now and it's been flawless. No need to worry when I travel.

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