Piece of mind, stable salinity By Adam on 9/15/2015
Adam would recommend this product to a friend
Wow, what a great purchase. This is the way to keep your tank topped off for evaporation loss and keep salinity EXTREMELY stable. Drop dead simple with two forms of measuring water needed. Takes about 5 minutes to install and get running. This is especially helpful when I travel and have a sitter care for the tank. All they have to do for water is keep the top off jug full and everything else from a water level perspective is covered. I really love this product. This is the best solution for automated top off I have seen.
Love it By Jorsreeftank on 9/6/2015
Jorsreeftank would recommend this product to a friend
This is my third ATO system so I feel qualified to Say this is the best one. It's easy to install an what I like best is its safety redundancy and the fact that it really keeps my water where I wantbit!! It kicks the pump on as soon as the level drops. I would say less than a pint
Best ATO By Joesreeftank on 8/23/2015
Joesreeftank would recommend this product to a friend
Do not screw around with the others, This one does what it says, It keeps my Sump right were I set it, I have a 40 gal sump and if it looses less than a couple of pints it kicks on and tops off..Easy to install
Must have item By Jim on 8/11/2015
Jim would recommend this product to a friend
Great auto top of package, very easy to install and get set up. Pump is a little loud for how small it is (only hear it when in the room, which i like since I know it is working). The price is a little high, but totally worth it once you see it in person and have it setup. Would definitely buy again.
It's a Must Have By Derek on 8/10/2015
Derek would recommend this product to a friend
Hands down the best ATO, I have every owned and I can't see myself using anything other than this product. Wrongs flawlessly and most definitely it put me at ease not having to worry about adding water or flooding my sump.
Excellent ATO System By 40g Long on 7/22/2015
40g Long would recommend this product to a friend
After we finally got our tank set-up, I was amazed at the amount of evaporation from day to day. Being new to the hobby, I was concerned with maintaining stable water parameters. . I watched all the videos, researched the high tech models to the DIY versions, and decided the Tunze would be the ATO for our system. Since it's installation it has been performed flawless. I highly recommend this product.
great product By rrosenb on 7/22/2015
rrosenb would recommend this product to a friend
So easy to install and works perfectly. I wish all aquarium products could be more like this
Excellent ATO By Conny on 7/22/2015
Conny would recommend this product to a friend
Well built, easy setup, reliable- excellent ATO
Works great By Dave on 7/17/2015
Dave would recommend this product to a friend
This thing works great!! A little pricy compared to other top off brands but very dependable and unlikely to fail. I would recommend this product over all the other ones on the market. Easy to install too!
Solid and reliable By Steve on 7/16/2015
Steve would recommend this product to a friend
The Tunze 3155 Auto Top Off system is the best there is. This is my second 3155 system, just installed on my new 185 gal tank build. My first 3155 system (on my first,180 gal, tank build) continues to function perfectly, with no issues, after more than 3 years of service.
Nice simple and reliable By JEMM55 on 7/14/2015
JEMM55 would recommend this product to a friend
Better than the rest...the electric eye beats the mechanicals hands down
Loving my Tunze ATO 3155 By A.J. on 7/13/2015
A.J. would recommend this product to a friend
After a fair amount of research and reading many customer reviews I pulled the trigger and bought the 3155. Works perfect and only took a few min to set up. It really take the stress out of traveling, not having to worry about your water level. ALSO - has kept my salinity rock solid for over 3 months now, which my corals are loving!!
great customer service By dozer42 on 6/20/2015
dozer42 would recommend this product to a friend
My ato quit working. Contacted tunze and they had me send it in. Long story short my pump went bad and burned out the controller unit. I had to buy a new pump but even though my controller unit was out of warranty they replaced it for free.
Must Have By RICHARD on 6/16/2015
RICHARD would recommend this product to a friend
This works great and the two different sensors are awesome. I even plumbed this to feed my two foot tall DIY kalk reactor and it feeds the reactor with no issues.
Get it. By Michael on 6/12/2015
Michael would recommend this product to a friend
This is my first and probably the will be the last ATO system I will need to buy...unless I set up another reef tank of course. Forget about the "hefty" price tag, your tank is certainly worth it.
Excellent product! By Joseph on 6/1/2015
Joseph would recommend this product to a friend
I have this setup currently for my system. While the instructions are not as straightforward as I'd like, there are plenty of videos online to learn how to set everything up. There are several ways to use this product which are part of what makes it good but also part of why the instructions are a little confusing. Nevertheless, it works great and worth the money IMO. Get it.
EXCELLENT PRODUCT By MARIO on 6/1/2015
MARIO would recommend this product to a friend
IT IS A PEACE OF MIND, NOT HAVING TO WORRYING IN ADDING WATER AND SALT EVERY TIME IT GETS LOW.
Fantastic By Plomanto on 5/28/2015
Plomanto wouldn't recommend this product to a friend
This thing is awesome . Very easy to install and works exactly as described. I highly recommend this product for any one looking for an ATO
over 5 years and it is the best! By mathdoc on 5/22/2015
mathdoc would recommend this product to a friend
I have had one of these as my overflow system along with a 20 gallon food grade trash can filled with water plus some Kalk for over 5 years. When I first purchased it, I remember reading it might not last with kalkwasser. Well, 5 years and 1000s of gallons later, the unit is still functioning perfectly. When it dies someday, I will not think twice about purchasing any other brand. Don't think twice, this is the best top of on the market!
Mixed feelings By Wolfentank on 5/16/2015
Wolfentank wouldn't recommend this product to a friend
I've been using one of these for about 8 months or so, and I can't say that I love it or hate it. It's possible that my unit may have a defect as it will occasionally over fill and trigger the emergency alarm. At the same time I had a cheap $10 float switch/dosing pump set up on a nano tank that was flawless. Overall, this is a pretty good ATO and I do like the alarms. I wish it had some kind of switch to turn it off/on for when I'm doing water changes though.
Worth every dime! By Gerry on 5/14/2015
Gerry would recommend this product to a friend
The $200 dollar price tag is a little hard to swallow... But the peace of mind is completely worth it. Even though the instructions were a little hard to decipher because their English was badly translated(at least for me it was) the set up was simple and quick.
I did have a defect with the laser eye but BRS was super quick on getting squared away.
Wish everything was this easy. By jon on 4/27/2015
jon would recommend this product to a friend
drop it in tank. connect a few wires. fill container. set optical level. done...
only issue i had i had to call to figure out where the sensor picked up its not the tip its the beginning of the cone. has multiple sensor options and fail safes. highly recommend.
would recommend this product to a friend and reefer By Frank on 4/27/2015
Frank would recommend this product to a friend
This is my 2nd one have two tanks 90 gallon and 180 gallon on my 180 Gallon have been running the 1st one for over two years now and have not one issue the best thing out there, I have used, different ATO but this is the one everyone should go with. ALL REEFERS THIS MUST HAVE save you lot of time. Just set it up keep water in the pump unit that you used and walk away.
Perfect..!! By Dinoflagellates on 4/23/2015
Dinoflagellates would recommend this product to a friend
I should bought this ATO a year ago an forget the daily top of. This set is all I needed for my 150 gal reef aquarium..!