Why is the Tunze Osmolator ATO the most popular Auto Top Off system for reef tanks? Reliability!

[@stevo4535]

This is crazy. I was huge into reefing a decade ago and loved my Osmolator back then. Now planning my dream in wall 1000 gallon tank and starting to look at all of the new tech, its still here!!!! wow.

[@Berkmnn]

I plan my 1000 gallon every day. Then I realize I’m broke and go stare into my 13.5 gallon😂

[@miguel_m19041]

@@Berkmnn one day buddy.... one day... =)

[@shallowreefing]

I've had mine for 6 years and it's never failed. I love it!

[@Messier87_M87]

I just purchased a tunze nano ato a couple days ago. I hear some people saying they don't like float switches but im very meticulous when keeping things clean on my aquarium.

[@michaelhans2509]

Always love the videos. Keep them coming.

[@harlanmichael7088]

Great explanation. I just purchased one. Thanks for sharing.

[@Angel-cp3zo]

Omg I was just thinking on buying this !

[@gersonsalcedo3227]

Great video. Have you tried adding the sensors on the original ato reservoir? To avoid too much current and salt creep? Thanks, love tour videos!

[@joshua969]

So glad I went with this one. One of those cases where you really do get what you pay for.

[@apss5736]

Awesome video

[@submergedroots]

How big is the sensor unit? Will it fit in the back area of a Waterbox 20 cube?

[@BRStv]

We don't have any Waterbox tanks to measure, but the main magnet for the Osmolator sensor is roughly 2.5" in diameter.

[@Wilfried78]

Five star rating, standing ovation, still mine failed due to a serious design flaw: It has a main optical sensor, and a second float sensor that prevents it from accidentally overflowing if the main optical sensor fails. However, mine failed the other way round, in the off position. It thought my water level was fine, while it was too low. I came home to burnt return pump because it was running dry. That is why I am looking for a similar ATO system with three sensors. Preferably with three float sensors, because optical sensor will always fail sooner or later.

[@rja9784]

Mine seems to turn on without pouring water into the tank. Any idea why this is happening?

[@BRStv]

When you plug the ATO in and the pump turns on to prime, give it some good shakes to wiggle any air loose. It's usually air in the pump that causes this. Otherwise, make sure that you're not trying to pump water more than 7' vertically.

[@marc8345]

Killer for me and why I sold it, the pump when the ato reservoir runs dry and you refill doesn’t pump water. It doesn’t self prime

[@VeryBadReputation]

Does the 3155 have an internal shut off timer like the nano? If so what time limit is it? About what flow rate does it have if the 3155 is set to the lowest setting?

[@BRStv]

The 3155 does have an internal timer of about 10 minutes. The flow rate is hard to say for sure because it will depend greatly on how high you're pumping vertically. The farther it has to pump vertically, the lower the flow rate will be.

[@VeryBadReputation]

@@BRStv one last thing. Can I have the width size of the inner magnet? Planning to use it in a tight space.

[@VeryBadReputation]

@@BRStv one last thing. Can I have the width size of the inner magnet? Planning to use it in a tight space

[@bretthuffine]

Quick question. I have a 15g mixed reef. I only want the water level to only be able to drop about 1/8" before the ATO would kick on. Is it possible to fine tune how much water drops before kicking on?

[@BRStv]

With most ATO systems, you won't have that level of control. That said, the water level doesn't drop a whole lot with the optical eye in the Osmolator 3155. It might be slightly more than 1/8", however.

[@bretthuffine]

@@BRStv thanks for the reply!

[@stevenpitts3355]

Didn’t this just fail on the BRS 360?

[@BRStv]

The sensor got dirty. Ryan cleaned it and it was back to working again 🙂

[@bushydray]

does the pump fit into the neck of a 25l tub?

[@BRStv]

The pump is about 2" in diameter at it's widest point, so it'll depend on the size of the neck of your container.

[@mikepevine3389]

Which tunze should I get for a biocube 16?

[@BRStv]

Either will work, but I like the 3155 due to the optical eye and float backup. If you go that route, just make sure you open the controller and turn the flow all the way down to the nano setting

[@torontoraptors2107]

Its Thomas! Auto like! Yeahhh-

[@Ilovedtiiiiiiiii]

So you tunze 5017 control box got wet. Can you buy just the box to replace it ? Or should i say The lights going off code says it got wet but it did not look wet.

[@sojusliimtdflock]

Does anyone know how long the cables are,they look really short...

[@merrittmcdowell8675]

I have this ATO on my standard 90 and its seeming to have an issue with with air traveling back down to the pump and causing an issue with the pump losing its ability to pump without shaking the air our of the pump to get it going again, i had another a few years ago on my 180 and did not have this issue any ideas?

[@BRStv]

Strange. Since you can't post photos of your setup here, I might suggest reaching out to our customer service team. We use osmolators almost exclusively around the BRS office, so we should be able to help 🙂

[@williamjoo6343]

my tunze never let down me. Only cons would be loud alarm lol.

[@BRStv]

If you open up the controller, you can change the position of the jumper to disable the audible alarm if you'd like

[@MomboJumbo]

A small price to pay for salvation

[@ScottyR951]

Be careful when using Kalk Comps last a year or less even when you clean them I’m on my third pump but I do love the ATO but like I said I don’t feel the pumps last very well

[@BRStv]

You're right, kalk is definitely hard on ATO pumps. If you have kalk in your ATO reservoir, I'd advise reefers to budget for a pump replacement every year or two, regardless of ATO brand. Good news is that the Tunze replacement pumps are pretty inexpensive.

[@rakeshkahan3986]

Wait was it just me or did he basically say the intro points twice?

[@dartdude2668]

I got a mini aqua smart ato and it sucked didn’t last one year

[@Plantasea]

A lot of bad reviews ok this. Plus they’re sold out everywhere even on your site.. and they’ve been for months. So maybe do an update video 😃

[@joe0813]

Thing is a giant piece of crap.... I went through 4 of the 3155s one bad pump and 3 bad circuit boards. none were ever in my sump area. And now my nano tunze that I use for my small QT is also shitting the bed. It doesn't detect low water and the pump only pumps if you unplug it and plug it back in. I will never again get another tunze product

[@jaronclark1365]

I swear man I run a small aquarium business where my tanks are up to 3.5 hours away, same thing happened for me. Happens just as much as much as it works. I hate this product and the company that makes it!!!

[@curtnelson6240]

@@jaronclark1365 Do you have an ATO that you would recommend?

[@exxpl]

F* Tunze. My ATO nano after one year die. Tunze say this is my faul becouse it was in cabin with sump. Now I have ATO with arduino and it works perfect.

[@gasp5027]

Saltwater can be cheap more worth it more awsome and colorful but........ the risks are your mom might slap you for making her wallet deflate

[@EddieDubs]

There's no possible way that's pronounced "tunes."

[@wunlymshim7768]

These things break. I've had 3. Save yourself and buy something else.