XP Aqua Duetto 2 vs Tunze osmolator 3 vs Red sea ATO

[azorath]

Hello everyone!
Anyone have any experience with any of these, I am planning on adding an ATO to my Innovative marine EXT 100. Ideally, I would like an ATO that isn't really loud as my tank is in the living room. I was eyeing the duetto 2 but I saw a lot of people comparing it to the osmolator nano and was concerned that maybe the duetto isn't good for larger tanks. Thanks!

 

[Chris Spaulding]

I have been running the OG Duetto on my 150 gal for almost 4 years with out a problem and have been running them on my other tanks as well no problems. The only real noise I hear is when the ATO reservoir is getting low and the back syphon is working as it should. But with any ATO I think this would be the case.

 

[azorath]

I will go with the duetto then, thanks! Also what ATO reservoir do you use?