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Great the second time around! By Dave on 11/8/12
Dave would recommend this product to a friend
My first one got fried in a lightning strike, it was super touchy! I was very frustrated with it, almost tried another ATO. The second one is bullet proof.
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Why get any other? By Ben on 11/7/12
Ben would recommend this product to a friend
I just purchased this, as my first ATO. I realize it is a little pricey, but in this hobby, you get what you pay for... I have been contemplating on what to get for months, after hearing from so many people that wish they would have went with this in the first place, I just decided to get it. I am glad I did. It is incredibly easy to set up, with little reading of the directions, I probably spent more time drilling through my stand than actually setting it up. it is pretty much a "plug and play" device, and it will come with everything you need. I ordered and picked up from BRS within a hour, as always the service I got once I was there was great.
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Easy to use and Reliable By Ali on 11/3/12
Ali would recommend this product to a friend
Replacing the water evaporated form your tank is a chore and nightmare for every one in the hobby. so when it came for me to setup my 120 gallon tank this was one of the first piece of equipment i got for my reef. i must say simple to install and reliable it has never failed on me or flooded my basement. if you want simple reliable this is for you.
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nice By Joe on 10/29/12
Joe would recommend this product to a friend
Bought this after getting fed up with making top off water everyday. A little pricey but it comes with everything you need and is easy to set up. The optical sensor is nice and was a selling point for me.
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GRRREAT PRODUCT By harry on 10/14/12
harry would recommend this product to a friend
I have had saltwater aquariums for 20+ years. Iwork offshore and overseas.I have to depend on someone to check on my tank on a daily basis to add water. This Product was very easy to set-up. I tested it by turning off power, removing water and adding water, and it works great. This tank can go a week without supervision now...Probably the best piece of reef equipment i have ever bought.....Well worth the price!!!!
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Best ATO By Chris on 10/13/12
Chris would recommend this product to a friend
Seems like lots of money compared to some of the other ATO but it's worth it. Nice to have something that is reliable and gives great piece of mind that it's just going to work.
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no issues By james on 9/22/12
james would recommend this product to a friend
I've had mine for over 1yr. It's never given me the slightest hiccup.
I use a small reservoir for top off water (2.5g jug). My jug has run out of water on a number of occasions. The pump included in this unit is very durable. I think most other pumps would of been smoked by now.
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Works Great as an RO/DI ONLY Top Off By Toby on 9/21/12
Toby would recommend this product to a friend
Works great as an RO/DI ONLY top off but I would not trust it to top off with KALK. The optical sensor works great! This product will help you enjoy the hobby.
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Awsome Top off system and works right out of the box! By Ken on 9/14/12
Ken would recommend this product to a friend
Just set up the Tunze top off system what a pleasure to install and complete no other parts needed!
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Great product By Steven on 9/4/12
Steven would recommend this product to a friend
This is one of the best aquarium devices. Just add water to the top off container once a week and forget about it. Easy to set up and the magnet holders work great.
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Set and Forget By nspence84 on 9/1/12
nspence84 would recommend this product to a friend
Have been using for a week now and love it. Don't have to worry about if the wife topped off the sump or not while working a 16 hour shift. I come home to a always level sump. Made life easier!
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I finally caved, and I dont regret it! By amber on 8/25/12
amber would recommend this product to a friend
I heard people talk about auto top offs or ATO for months but balked at the prices.
I finally got fed up with making buckets of water and dripping it all over the place every day to top off my tank, not to mention the stress it put on my fish if I forgot to do this one day and the water level dropped!
I finally splurged and bought this one after reading all the positive reviews and I have to say I am in love!
I bought an attractive kitchen trash can with a lid to fill with water and keep it next to the tank. I only have to fill it once a week which is awesome. It has even run dry and the pump still works like a charm (not that I recommend doing that).
Its a sturdy easy to use and worry free way to keep your tank at the optimum levels and I highly recommend it!
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Love my Osmolator! By kenny on 8/25/12
kenny would recommend this product to a friend
Purchased my Tunze Osmolator for my 70 gallon rimless cube reef tank about eight months ago....it keeps my Specific Gravity at 1.025 and it is very easy to set up, one of my favorite purchases for my tank. No more manual dosing top off water for me...Purchase an extra pump as you may need a new one in 8-12 months.
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Great System By Will M on 8/13/12
Will M would recommend this product to a friend
I never realized how much easier keeping my tank topped off would be until I ordered this unit. Excellent system and as long as I weekly fill up my top off water container I'm set. No more bi-daily pouring RO into my sump. A+!
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Set it and Forget It! By Justin on 8/13/12
Justin would recommend this product to a friend
Extremely reliable and maintenance free. Highly Recommended
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You pay for what you get By Louis on 8/11/12
Louis would recommend this product to a friend
This product is a little pricey but is well worth it. Auto Top off made simple. 2 switches (one optical and one mechanical) create a fail safe design that keeps your salinity perfect at all times.
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Shouldn't have waited. By Bob on 8/11/12
Bob would recommend this product to a friend
It took me a while to order this product because of the price. It is worth every penny. I no longer have to worry about daily top offs. I have a 125 gal. tank, and use a 5 gal. bucket as the top off. This lasts 1-2 weeks. It was very easy to set up, and has worked flawlessly . I highly recommend.
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Absolutely Amazing By Colin on 7/25/12
Colin would recommend this product to a friend
This thing has totally simplified my daily maintence of my tank. Keeps salinity right where you want it. Absolutely worth the money, the craftmenship is superb
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Great Product! By paul on 7/20/12
paul would recommend this product to a friend
I have had this unit for over two years. It works great and I have had no problems with it. I love not adding top off water every day! I use a 20 gallon Brute trash can for my RO/DI top off water and that lasts me two weeks for my 240 gallon tank. If you are going to use it with a kalk Stirrer I would recommend using a PH controller because if you have a small leak or start doing a water change before you unplug it, you could get concentrated kalk into your tank pretty quickly.
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Solid. Easy to install By Martin Cron on 7/17/12
Martin Cron would recommend this product to a friend
Just got it set up and it works like a charm.
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Quick easy and very well thought out. By reefcrazy12 on 7/11/12
reefcrazy12 would recommend this product to a friend
Do not hesitate to purchase this the price point is worth it the peace of mind and lack of necessity to spend the daily fill up is worth every cent and on top of that the wife will actually like the functionality of this piece of equipment.
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A must By Justin on 7/9/12
Justin would recommend this product to a friend
Everyone should own a Tunze auto top off. Really easy to setup and works great. This is a perfect device.
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Great upgrade, don't have to worry about water top offs everyday. By Moises on 6/17/12
Moises would recommend this product to a friend
This is one of the best upgrades you can add to your system. Yes the price is a little high but your paying for a high quality product that is fail safe and will give you peace of mind. Not to mention no more daily top off chores. The system is easy to setup and the magnets make placing the sensors hassle free and give you the ability to place them where ever you want. If your going to buy a ATO system this is the only one to consider.
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Top Notch Product By Jeff on 6/5/12
Jeff would recommend this product to a friend
Can't beat the quality of the Tunze Osmolator and BRS price and service. The dual sensors and sturdy magnet mounts provide peace of mind. I feel safe with this system.
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Great fail safe ATO solution By David on 5/28/12
David would recommend this product to a friend
Have had it for a while now and rely on it completely. Have never had an issue with failing in the on position like float switches tend to do. Would highly recommend.
Magnet holders are also a plus as placement is a snap.
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Cool system By Joseph on 5/17/12
Joseph would recommend this product to a friend
Its my first time purchasing an ATO system, after seeing the price I did not think that I was going to buy this system, but after knowing that its fail safe I decided to get one. It works awesome and I would recommend.
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Cool ATO system By Joseph on 5/17/12
Joseph would recommend this product to a friend
This was my first time buying an ATO system,after looking at th price I wasn't going to buy, but after hearing it's fail safe I decided to get one. I don't regret getting one at all ill recommend to anyone in this hobby.
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A+ By Kenneth on 4/22/12
Kenneth would recommend this product to a friend
Probably the best piece of equipment i've ever bought for my 75. Very easy to set up and works like a charm.
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Best ATO system By Mark on 4/18/12
Mark would recommend this product to a friend
Used one without problem for over 6 years! Optical eye eventually failed, but still a great item!
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Easy peezy By David on 4/17/12
David would recommend this product to a friend
Simple, easy to use. Only downside i see is when doing water changes you must unpower it.
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Does the job By David on 4/17/12
David would recommend this product to a friend
Have no complaints other then each time i do a water change i have to disconnect it and when i re connect it wants to go over the sensor because im dumping water in too quickly. Very easy to use, no issues with it whatsoever. I have one on both of my tanks
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Best of the Best By Omar on 4/13/12
Omar would recommend this product to a friend
Easy to install and to use. Very strong magnet so you don't need to worry about it falling.
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The Best By Edwin on 3/27/12
Edwin would recommend this product to a friend
This ATO was so easy to install and it is worth the price. Matching pump takes the guess work out. The best feature I like is the electronic eye. It works like a charm and the magnetic holder far surpasses those models with suction cups.
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Best stand alone auto top off system By Clint on 3/11/12
Clint would recommend this product to a friend
I own two of these and really like them. The magnet mounts are very secure and prevent te switches from moving.
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Better coverage than my auto insurance ! By Darrin on 3/8/12
Darrin would recommend this product to a friend
The Tunze Osmolater is definitely a good investment to have. I bought one for my 75 gal tank and I am strongly considering one for my other smaller salt tank. They work great !
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very nice!! By illya on 2/23/12
illya would recommend this product to a friend
You won't be disappointed with this purchase. You could buy a cheaper way of topping off but when you run dry and burn a pump up the one time you leave the house for more than 6 hours or flood your room you'll wish you had bought this unit.
i keep the standard float valve nice and clean by running the top off water on it. keeps any salt build up off and the other electronic eye you got no worries about. Perfect setup and i feel confident in leaving for days on end without worry.
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perfect By david on 2/20/12
david would recommend this product to a friend
this is truly a set it and forget ato. just wish i had purchased it a lot sooner
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Great product By Frank on 2/1/12
Frank would recommend this product to a friend
The build quality was very good ad the factory support has been great too. I will soon be adding another Tunze 3155 to one of my other tanks
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About perfect By Bill on 1/31/12
Bill would recommend this product to a friend
Well constructed with magnets that will hold it wherever you want. Works well in a RSM 130D.
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Worth the extra cash By JOEL on 1/29/12
JOEL would recommend this product to a friend
Although this product is one of the more expensive top-off systems, you have so much already invested that it is nice not to rely solely on float switches and flood your house. Worth the extra cash in my opinion.
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Does the job By Aaron on 1/20/12
Aaron would recommend this product to a friend
Overall it is a great product. I have not experienced any malfunctions and the holder for the float switch and eye is very convenient. It does what it is supposed to do. However, I do have a few complaints.
1) The pump automatically pumps about a cup of water each time the pump is turned off. That means, if you dose kalk with your ATO as I do and your APEX turn the pump off because the pH is too high, as soon as it turns back on it pumps more high pH into the tank. Not a good feature. I'm sure it's to maintain constant flow through the tubing after it has been resting, but a manual button for this would be better
2) When the ATO alarm goes off, the only way to turn it off is to power down the ATO. Which means when you turn it back on, AGAGIN, it pumps more water into your tank. A button for this would also be better.
3) Eh...I guess it could be a little more attractive. Kind of an ugly black box.
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The ATO to get By Jason on 1/18/12
Jason would recommend this product to a friend
Finally got around to setting this up yesterday and it was easy as cake. 5 minutes out of the box and rolling. Everything you need for easy, dependability, and redundancy - could not have asked for a better ATO. Must have.
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ATO By TUBBY on 1/16/12
TUBBY would recommend this product to a friend
GOT THIS ATO A WHILE BACK, JUST WANTED TO TEST IT OUT BEFORE I POSTED A REVIEW..."IT'S A WINNER" LOVE THIS ATO UNIT. VERY ACCURATE - ALSO LOVE THE MAGNET DESIGN. I ALSO PURCHASE A SPARE PUMP, IN THIS HOBBY YOU NEVER KNOW WHATS GOING TO HAPPEN. AT LEAST WHEN IT DOES HAPPEN , I'LL HAVE A SPARE.
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Makes topping off easy By Richard on 12/29/11
Richard would recommend this product to a friend
definitely worth getting easy to set up, keeps water level perfect, no problems
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great product a must have By james on 12/6/11
james would recommend this product to a friend
the tunze osmolater is a must have for any lazy reefer lol, it keeps the salinity at a set point where you want it i love it & i got it for a cheap price on black friday..
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Perfect By Jose Manuel on 11/25/11
Jose Manuel would recommend this product to a friend
Does the job perfectly. my water level is always constant, alarm has never gone off.
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Great ATO By Frank on 11/23/11
Frank would recommend this product to a friend
Keeps the warter right where i want it. i just wish i would of got this one a long time ago
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over all By Robert on 10/31/11
Robert would recommend this product to a friend
I was a little skeptical after the instructions stated that this pump was not meant to handle large tanks. Let’s just say the pump works fine for my 370 gal. I have the ATO dripping into the sump and don’t take long for the water level to stabilize. I love this product; it keeps my skimmer stable and saves me a numerous trips of dumping water in tank.