Thoughts on Tunze Osmolator 3 Nano ATO

[Kalebos]

I am starting up a 20-gallon AIO and will need an ATO. Does anyone have any experience with the Tunze Osmolator 3 Nano? I am pretty close to pulling the trigger on this one, but ATOs scare me and I want to be confident in my purchase. I am open to other options as well. All advice is much appreciated!

 

[twentyleagues]

I have an osmolator 3 but in regular size it has worked great for about a year now. I didnt know they even made a nano 3, neat. Tunze ato have been the best working safest atos on the market for years. I dont mess with the other brands anymore too many ato stuck on or not turning on sensors dying. The older tunze ato needed the optical sensor cleaned every couple weeks, this new one I have done nothing to it Its been running a year.

 

[Reef.]

Love mine, don’t let the lack of a 2nd sensor put you off, it has a 1 min cut off so the pump will cut off after a min, adding only 1.5 litres of water so would hardly affect salinity in the event the sensor were to fail.

 

[Arkayology]

I have a Osmolator 3 and it has worked flawlessly for 5 months. I am very happy with it so far. I don't see why the nano version would be any different.

 

[Pod_01]

I use it on my 10gal. Nano tank. So far so good, silent compared to the old Tunze ATO Nano.
I used the old Tunze Nano ATO for 6 years but the float switch started acting up.

Never had issues with the original Tunze Nano ATO overfilling the tank. I have no hesitation buying or using it.
They are made in Germany including the pcb boards, pump etc…

 

[Jonreefer]

I have had the Nano 3 for about 2months and it has been rock solid in my Nuvo 20

 

[Tahoe61]

Using on an IM 14 gallon peninsula without issue. Easy assembly, quality pump.

 

[Tucsonreefer]

I have had the Nano 3 for about 2months and it has been rock solid in my Nuvo 20

I have the nano 3 on a 60 gallon cube and it works flawlessly but the documentation says the pump will run a minimum time of 10 seconds and mine really never even runs 5 seconds. Is that true for you?

 

[Jonreefer]

mine only runs like 2sec to top up my small tank. when i do a water change and maybe dont get it right and took out to much water, I feel like it will run for 5sec stop for a second and then run again.
I am upgrading to a 50g in a few weeks and will be using it on there as well

 

[dan9989#]

Hi I have quite a random question regarding the nano 3 Osmolator. I purchased this yesterday however my young son was playing with it before I installed it and the blue hose connector from the pump has gone missing. It is blue on the box and assume this is the case in real life.
I am very new to this and am having a hard time finding the exact part to replace this. any help would be greatly appreciated

 

[js-3Design]

What is the amount it fills in mm? My current ato fills 4mm of water. That is wayyyy to much for the filterroller to work properly.
I need more like 2 mm max...

 

[jadedog]

I have the nano and the full size tunze ATO they both work amazingly no complaints.

 

[kboogie]

I own the full size version and really like it. If the nano version is similar I would recommend it.

 

[Reef.]

Hi I have quite a random question regarding the nano 3 Osmolator. I purchased this yesterday however my young son was playing with it before I installed it and the blue hose connector from the pump has gone missing. It is blue on the box and assume this is the case in real life.
I am very new to this and am having a hard time finding the exact part to replace this. any help would be greatly appreciated

I wouldn’t necessarily go by the picture of what you should have, I have the same ato, mine is all blue where as the picture shows black and blue, if the hose fits securely and doesn’t come loose you should be ok…I know a Tunze rep hangs out on these forums so should spot this or maybe post in the Tunze section.