juan Posted September 19, 2020 Share Posted September 19, 2020 My current ATO is starting to fail, and I need to find a new asap. I’ve been looking at these nano ATO’s but not sure if they’ll work with the all-in-one setup compartments, as in how they have the black plastic on the glass? The other options is the nano tunze but I’m not really in floats, but heard these are trustworthy. If you guys have some experience with these or insight’s that would be so helpful, or even any for sale? Quote Link to comment Share on other sites More sharing options...
bler Posted September 19, 2020 Share Posted September 19, 2020 I went with the tunze nano, been working great.. except for the one weekend I went away and it got stuck lol but other than that been working fine, I don't ever really let the top off container run dry but I think that's a complaint about the tunze pump not restarting correctly, that and it only uses one float valve Quote Link to comment Share on other sites More sharing options...
juan Posted September 19, 2020 Author Share Posted September 19, 2020 8 minutes ago, bler said: I went with the tunze nano, been working great.. except for the one weekend I went away and it got stuck lol but other than that been working fine, I don't ever really let the top off container run dry but I think that's a complaint about the tunze pump not restarting correctly, that and it only uses one float valve thats what I’m afraid of, it getting stuck when I’m gone lol 1 Quote Link to comment Share on other sites More sharing options...
bler Posted September 19, 2020 Share Posted September 19, 2020 12 minutes ago, juan said: thats what I’m afraid of, it getting stuck when I’m gone lol I kinda think you always have that possiblity with any technical automation systems, nothing is completely fail safe! I'm not exactly sure what happened with mine, I think the float just got stuck, I'll be going for a week long trip here soon but will have someone sitting the tank but it will be a real test for sure 🙂 Quote Link to comment Share on other sites More sharing options...
MReef20 Posted September 19, 2020 Share Posted September 19, 2020 https://www.bulkreefsupply.com/tunze-osmolator-universal-3155-auto-top-off.html A little pricier, but uses an optical sensor vs. float switch (has a float switch for emergency shut off). I think you can change it to "nano" mode as well. Been serving me well (I've also an AIO), just make sure it's not near real turbulent water or bubbles as that can impact the operation of the optical sensor. Quote Link to comment Share on other sites More sharing options...
Gumby Posted September 20, 2020 Share Posted September 20, 2020 7 hours ago, MReef20 said: https://www.bulkreefsupply.com/tunze-osmolator-universal-3155-auto-top-off.html A little pricier, but uses an optical sensor vs. float switch (has a float switch for emergency shut off). I think you can change it to "nano" mode as well. Been serving me well (I've also an AIO), just make sure it's not near real turbulent water or bubbles as that can impact the operation of the optical sensor. BRS also has some really good videos on ato's and how to set up some backup redundancy for a fail safe to give you piece of mind. It isn't quite fail safe but unlikely everything would fail at once with backup. Quote Link to comment Share on other sites More sharing options...
Higher Thinking Posted September 20, 2020 Share Posted September 20, 2020 Tunze. 100%. I'd go with the full version not the nano. Sent from my SM-G975U using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted September 21, 2020 Share Posted September 21, 2020 I have a tunze (the regular size one) that i will sell for cheap I also have a spare pump.for it. Quote Link to comment Share on other sites More sharing options...
juan Posted September 21, 2020 Author Share Posted September 21, 2020 8 hours ago, Higher Thinking said: Tunze. 100%. I'd go with the full version not the nano. Sent from my SM-G975U using Tapatalk Why would you go with the full size? I was leaning over to the tunze but know I wanna know why you say the full size? Lol Quote Link to comment Share on other sites More sharing options...
juan Posted September 21, 2020 Author Share Posted September 21, 2020 1 hour ago, pdxmonkeyboy said: I have a tunze (the regular size one) that i will sell for cheap I also have a spare pump.for it. Dm you. Quote Link to comment Share on other sites More sharing options...
TheClark Posted September 21, 2020 Share Posted September 21, 2020 Is autotopoff.com still around? Their stuff... I have been so happy with it over the years... Quote Link to comment Share on other sites More sharing options...
Tandor69 Posted September 21, 2020 Share Posted September 21, 2020 (edited) I own 3 of the XP Aqua Duettos and love them. Never had any issues at all. I have 1 in a Fluval 13.5 AIO, one in a 16 gallon and 1 in my main tank. Never had an issue. I also own an auto aqua smart micro. Currently running on my freshwater tank. I have had to replace the pump once. Also don't care for the fact that the sensor has a bright blue/red LED that shows in the tank. The Duettos have the led on the controller. Plus the sensor has a high and low. If the water goes over the top sensor the pump is cut off. Edited September 21, 2020 by Tandor69 spelling Quote Link to comment Share on other sites More sharing options...
Matteo Posted September 21, 2020 Share Posted September 21, 2020 Been running tunze for years! Bavarian designed and made. Can't go wrong. Quote Link to comment Share on other sites More sharing options...
TheClark Posted September 21, 2020 Share Posted September 21, 2020 Sounds like a ton of good options these days! I have APEX with cheap float switches everywhere, 10 in total! Quote Link to comment Share on other sites More sharing options...
Higher Thinking Posted September 22, 2020 Share Posted September 22, 2020 Why would you go with the full size? I was leaning over to the tunze but know I wanna know why you say the full size? LolOptical sensor over the float switch. The full size you get both for redundancy. Sent from my SM-G975U using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
Blue Z Reef Posted September 22, 2020 Share Posted September 22, 2020 Also...if you ever think down the road you want an Apex, the ATK kit at $200 can run independently of the apex (until you get one), has dual optical sensors plus float valve shutoff and pump. The pump itself is a tad noisy but not horrible. Food for thought... Quote Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted September 22, 2020 Share Posted September 22, 2020 I never understood the Apex ATO kit myself. I mean, with the apex and $10 in float switches and a pump.. instant ATO. I am with Clark, I have float switches everywhere. I really need to install a feed button... ahh projects Quote Link to comment Share on other sites More sharing options...
SuncrestReef Posted September 22, 2020 Share Posted September 22, 2020 1 hour ago, pdxmonkeyboy said: I never understood the Apex ATO kit myself. I mean, with the apex and $10 in float switches and a pump.. instant ATO. I am with Clark, I have float switches everywhere. I really need to install a feed button... ahh projects Part of the ATK cost is that the FMM provides extra ports which can accommodate additional optical sensors, leak sensors, or flow sensors. It's more of a platform than a single-purpose ATO device. Quote Link to comment Share on other sites More sharing options...
bler Posted September 22, 2020 Share Posted September 22, 2020 20 hours ago, Higher Thinking said: Optical sensor over the float switch. The full size you get both for redundancy. Sent from my SM-G975U using Tapatalk I was very much debating the nano vs. full, but I do only have a 20g so space was a concern.. and there was quite a bit price difference if I remember. Although I think that on the full version the float is a backup for the optical sensor and with the nano it has a 'backup timer' which can be adjusted between two settings and will kick off in 1.8 minutes at the lowest setting which will (depending on height and length) deploy .3 to maybe .8G of topoff water. That is if your major concern is overflow.. as far as failure to read or notice when topoff is not occurring, I'm not sure what failsafe there is out there. I think most failsafe is to prevent overflowing your tank. Mine failed by not topping off (float stuck in up position) instead of overflowing... Quote Link to comment Share on other sites More sharing options...
coyote Posted September 26, 2020 Share Posted September 26, 2020 Been following juan's post. I have a red sea max 250 running would the tunze osmolator universal 3155 be okay for this tank. Thanks for the advice. Quote Link to comment Share on other sites More sharing options...
juan Posted September 27, 2020 Author Share Posted September 27, 2020 So I ended up, going with the duetto due to the size. The foot print is so small literally the size of penny, and the pump has more then enough power to push up water to the tank. 2 Quote Link to comment Share on other sites More sharing options...
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