Worth Every Penny! By Chris on 11/19/2015
Chris would recommend this product to a friend
Easy to set up and install. Totally worth not having to add water to my tank everyday. All i have to do is keep an eye on my ATO reservoir and refill it once a week. Definitely one of the smartest purchases i have made for my reef tank!
Love the system, Pump is a bit noisy By Nicole on 11/12/2015
Nicole would recommend this product to a friend
Just put this in my FW tank since the boyfriend hates the sound of running water and I hate hauling buckets every couple weeks to prevent that noise. Awesome that I can connect a separate pump instead of the original if I feel like it ( I won't, too broke now). I plan on getting another for my future saltwater tank.
Sweet By Kurtis on 11/9/2015
Kurtis would recommend this product to a friend
This top off is awesome to say the least, very easy set up and works great. Alarms great feature and the control unit is user friendly. Only issue is the system is on the pricy side, but very happy with it. Everybody needs one.
Love By JOE on 11/9/2015
JOE would recommend this product to a friend
I've had this pump for maybe close to a year on my 150 gallon and i couldn't be happier the the setup is easy and i have never had one issue with this thing love it compared to my jbj ato on my 90g.
1.5 years of operation, still like its out of the box!! By Devin on 11/6/2015
Devin would recommend this product to a friend
This ATO is amazing! it functions so well, and is so user friendly! over 1.5 years of operation and ZERO issues!!! I do replace the pump every 8-12 months just in case, but have yet had one fail on me!
Awesome Product By Martin on 11/6/2015
Martin would recommend this product to a friend
Worth every penny. Excellent quality and performance. Simple to install and very adaptable.
Works ok By Steve on 11/2/2015
Steve would recommend this product to a friend
I've had this running for about week now and for whatever reason it is filling up too high at times and setting off the alarm. The small pump is also incredibly loud. It's irritating when it's turning on every 10 minutes. I expected better all around performance for a ATO at this price range.
Excellent product! By Tony on 10/30/2015
Tony would recommend this product to a friend
You can't go wrong with this ATO!
Love It By David on 10/30/2015
David would recommend this product to a friend
This is truly one of the best top offs i have seen the piece of mind is all i care about love the fact it has 2 ways it monitors. Love the fact it has a alarm when it goes to high and shuts its self off, a bit pricey. You get what you pay for, i had another one that the switch would get stuck and start running and running until pulled it down. This is a must buy if you want piece of mind when your not around
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.