Works great when it is working, if you can figure it out By tramboneplayer5 on 5/18/2013
tramboneplayer5 would recommend this product to a friend
The instructions for this are terrible. For something that costs this much, I think they could have hired a better translator to write the instruction manual. After watching people on youtube and reading threads on reefcentral, I am pretty sure I have it all together, but the water line occasionally falls out of the pump and the pump will continue to run while shooting water up in the air. Be sure to have a lid on your water reservoir.
For $200, I don't get a finished product? By Mike on 5/14/2013
Mike would recommend this product to a friend
I haven’t set it up yet and I’m sure it will work as advertised, but it contains a feature that is a pet peeve so excuse me while I rant a bit. The pump connects to the controller via two bare metal wires that have to be manually wired to a “terminal” connected to the controller. The manual does not explain how this is to be done. I got instructions from Tunze and had the strong impression that the rep thought I was either lazy or stupid for asking. I may be both, but when I pay more than $200 for an electrical product, I expect it to be fully wired. What would it have cost Tunze to add two snap in parts to connect the pump and the controller? A few pennies extra for each piece? So why didn’t they do it? I suspect because Tunze, like other major manufacturers of aquarium equipment, assumes that they can cut corners and the customers won’t complain. Well, it’s really no big deal, right? But what if you bought a top of the line coffee maker for $200 and it required that you wire the plug to make it work? Would that be ok? How about the numerous Chinese manufacturers who provide instructions for their product in absolutely incomprehensible English? I could go on. But if this kind of thing occurred in any other consumer market, there be an outroar. But since it’s just an aquarium product, we just shrug and look for a work around. IMO, we deserve better
good for a while By lwillis22 on 5/14/2013
lwillis22 wouldn't recommend this product to a friend
I have had this product running on my 125 gallon tank and it has been a life saver. However, it started malfunctioning and I had to return it to Germany to get fixed or replaced. It cost me $35 to ship it there and that was the cheap route. It has been 1 1/2 months since I shipped it out and still no contact from them.
What a Great Product: By Bruce on 5/9/2013
Bruce would recommend this product to a friend
For anyone that wants peace of Mind about their aquarium, this is the product for you. An accurate, automatic device that will add DI water or Kalkwasser to your Sump is the way I use it. Perfect for the person that makes short trips, without the worry of evaporation causing your salinity levels to rise while your gone. A perfect 5 from Me.
A MUST for larger tanks with large evaporation rates! By RandoReefer on 5/7/2013
RandoReefer would recommend this product to a friend
After upgrading to a 125g tank with a 30g sump, I noticed my evaporation rate upgraded also. One week of manually topping off 1.5gal per DAY, was enough for me to pull the trigger on this ATO.
I really trust the sensor on this system! I was close to buying the JBJ Auto Top Off but I'm so glad I put up the extra money for this one. It is sleek, provides a variety of setup options, VERY Accurate, and easy to setup. I gave it 4.5 stars, because it could have used a few more directions or a FAQ section.
Why didnt i get one sooner! By Jason on 5/1/2013
Jason would recommend this product to a friend
I finally made this purchase and its a life saver!
comes with everything needed (except water container).only issue is the
eye sensor gets micro bubbles on it when first installed which causes it to pump water continiuosly till high level alarm shuts it off.best advice is clean sensor with vinegar and let it sit in your sump for a couple days then its trouble free.
The best hands down. By Alex on 4/13/2013
Alex would recommend this product to a friend
Tunze osmolator top off is the best system you can buy. Well worth the price, comes with its own pump and has 2 different technologies working flawlessly to protect your tank and home from a flood.
great ATO By illya on 4/13/2013
illya would recommend this product to a friend
This is my second unit i'm ordering, first one was about 2 years ago. This is for a second setup, the first one is doing great. The one problem with these is the power plug. After sometime it becomes corroded and you get strange errors like overfill alarm wont stop. But if you have any problem the first thing to do is take off the 2 screws and clean the port and the plug. I cut a nail file down to about 1/8" to clean the port, and just a drill bit to scrape the plug inside. worked great and im good for another 6 months at least. At some point i'll just solder the wires and never deal with it again.
Worth every penny!!! By Steven on 4/4/2013
Steven would recommend this product to a friend
You do get what you pay for... Keeps my water level constant. Love the optical sensor they use on this system. No brainier to install. Now all I need is to make something to hide the top off container...
awesome product By brian on 4/4/2013
brian would recommend this product to a friend
I recently upgraded my 60 gallon reef tank to a 180 gallon. With my 60 I just topped off the old fashioned way but that was getting to be a chore with the new tank. I was on board with purchasing an auto top off but had serious concerns about failure...particularly in the on position. Virtually every other ato product out there was peppered with negative reviews regarding failure. We have thousands invested in the tank so it was worth it to spring for the osmolator. Piece of mind and very easy to setup. Skimmer works a lot better to.
Amazing By Dan on 3/27/2013
Dan would recommend this product to a friend
Probably one of the best investments I have made in this hobby. A really solid product.
Excellent product By P Duffles on 3/25/2013
P Duffles would recommend this product to a friend
I'll simply agree with the multitude of people praising this ATO. This thing literally changed my life :D
The best By FISHY on 3/25/2013
FISHY would recommend this product to a friend
The best thing that you can do to your tank.
Good Top Off Bad Instructions By Mike on 3/25/2013
Mike would recommend this product to a friend
The instructions on this top off could be WAY easier to understand if it didn't have 6 different languages on each page. Also, it should also state in there that you need to soak the opitcal sensor in soapy water and gently wipe off the polishing residue on the sensor before installation, also there is a dial on the inside of the controller that you need to set depending on the size of the aquarium or sump that you place the sensor in, the dial basically sets the dosing the pump pumps water into the tank/sump. A little better instructioni pamphlet would give this product 5 stars!
Great product!! By Bosley on 3/15/2013
Bosley would recommend this product to a friend
I have this running on my aquarium and it is spot on and fail proof . the back up plunger has not been activated Probably because the top off system works so efficient, Great product recommend to anyone who is tired of adjusting or just having other systems that fail.
Not Cheap..you get what you pay for By Curtis on 3/10/2013
Curtis would recommend this product to a friend
Best ATO available
Love It!!! By Troy on 3/2/2013
Troy would recommend this product to a friend
You get what you pay for, and this ATO is awesome!!! Easy to setup and fail safe. Great quality.
Serious about reefing? Get this! By Chris on 2/27/2013
Chris would recommend this product to a friend
One of the smartest purchases I've made. Expensive but made with quality and plenty of mounting options. Highly recommend!
Worth the Investment By JOHN on 2/24/2013
JOHN would recommend this product to a friend
I was a little apprehensive about spending this kind of money on an ATO. From the moment I opened the box I recognized the quality. Works perfect, provides piece of mind, and everything you need is included. Previously bought JBJ but was disappointed due to lack of redundancy. This should be fail proof with dual sensor/float valve.
Tunze ATO By Toby Flenderson on 2/23/2013
Toby Flenderson would recommend this product to a friend
Pros: works perfectly, precisely, the German way.
Cons: hard to fight off all the ladies who want to get there hands on my tunze.
best topoff out there By chris on 2/18/2013
chris would recommend this product to a friend
This topoff is the best there is. I replaced my jbj with this and am so glad I did. The optical sensor with a float is pretty much fail safe and my water level stays the same.
Love it! By Joe on 2/13/2013
Joe would recommend this product to a friend
I've never had an ATO system, but this unit is awesome! I had no problems setting it up. Sure, the instructions MIGHT be lacking a little, but I don't feel the complaints below are justified.
The main sensor monitors the water level and activates the pump. The other one can be used as a safety shutoff/alarm OR as an alert that your ATO reservoir is empty.
It's your choice!! I, personally, set it up in the latter form and the product works great.
Terrible By Pissedreefer on 2/1/2013
Pissedreefer wouldn't recommend this product to a friend
This product sucks end of story
Perfect! By Calvin on 1/15/2013
Calvin would recommend this product to a friend
after lugging around water for a few months i decided to get this along with a large storage container to relieve myself of water duties every morning. works great ! only have to top off the container once a week !