Good for what I needed By Eric on 2/23/2015
Eric would recommend this product to a friend
This is my first auto top off and it is working fine for what I have. The size is good and the pump is running great so far. I have only been using it about a week with only one small issue. That is, I can't find a way to have the pump sit level on the bottom of my reservoir. I think it will just take some time for the hoses and cables to stretch out. Overall, good buy for me though.
Dosn't fit rimmed tanks very well By Adam on 2/19/2015
Adam would recommend this product to a friend
If you have a top rimmed tank this will still work but it will sit low in the tank, making the waterline below the rim. Contacting Tunze now to see what they are going to do about it if anything. Love their products but the mount for the float switch needs to go back to the drawing board. So as of now I either have to deal with the low water line or fabricate a custom mount. If the float switch fit better I would have given it a 5 star.
Nice auto top off By Todd on 2/8/2015
Todd would recommend this product to a friend
Easy to set up and works great. My only complaint is that it needs a suction cup or something so that is attaches to the bucket as it just lays on its side without this
Good for a few months By Casey on 12/20/2014
Casey wouldn't recommend this product to a friend
My second Ato has stopped working. When the unit works, it's great.
When the first one stopped working, I reached out to BRS and Tunze. I learned that I was basically S.O.L without sending the unit back to them. I just decided to spend the money and buy a replacement.
That was a workable plan for a few months until the second unit died on me. I've decided not to buy another. I'd rather pour the RO water in myself than purchase yet another unreliable model from BRS. I hope they find a more reliable nano ATO to promote.
Works well fills need By Thomas on 12/9/2014
Thomas would recommend this product to a friend
Bought this to top off my nano tank. Set up was easy and does a good job maintaining water level. Lot less hastle than topping of tank daily and keeps salinity more stable
Can't imagine how I lived without this thing By Sean on 12/4/2014
Sean would recommend this product to a friend
No more lugging around jugs every other day, now it's only once every couple weeks! :) This is a huge upgrade and peace of mind. I have a small tank so this is huge in helping me keep my water parameters stabilized. This is a must-have for smaller reef tanks for people serious about their corals.
Works great By Meaton on 11/19/2014
Meaton would recommend this product to a friend
Perfect for my nano cube 28G reef tank
Compact. Works well. By Joseph on 10/29/2014
Joseph would recommend this product to a friend
The unit is very compact, works well, and maintains your water level with frequent small top offs.
My only complaint is the pump doesn't have a suction or bracket so that it sticks to the bottom/side of your reservoir bucket.
Replaced Hydro-fill By peter on 10/7/2014
peter would recommend this product to a friend
I owned the IM Hydro-fill for about 6 months when the controller went out. I've only had the Tunze running for a couple of weeks but I like it better already. Triggers from slight water level drops and I like the idea of the built-in fail safe.
Only complaint is the pump is pretty loud.
14days Dead By Richard on 9/12/2014
Richard wouldn't recommend this product to a friend
problem for the controller pump not working
Great System By John on 8/13/2014
John would recommend this product to a friend
Works great with my 38 gallon
14 months dead By Jason on 7/2/2014
Jason wouldn't recommend this product to a friend
Dead after 14 months. pump is fine brain unit doesnt work anymore.
Great product very reasonably priced By Randy on 5/30/2014
Randy would recommend this product to a friend
Love this little ATO system, and it's affordable for a Tunze product! I've had it for a week and it has been absolutely reliable with no fluctuation in my water level. My sump is a 10g aquarium with a heater, skimmer, and return pump all packed in, so it is a tight fit but it works. I left the cardboard separator between the two magnets because I had read that the magnets being too close can interfere with the float valve. It works like a charm and I couldn't be happier! Best $100 I have spent on my aquarium so far!
To the Top! By Taia on 5/21/2014
Taia would recommend this product to a friend
Tunze has a great product here! It has been working flawlessly to keep my tank topped up and my levels much more stable. It's really one of the most essential pieces of equipment you can buy, it's well made, but my only gripe is the quick connect from the pump to the controller itself. I'd prefer something a bit more salt creep proof! But overall, I'll be buying another one for my next tank as well!
ATO for my nano By charles on 5/12/2014
charles would recommend this product to a friend
installed this ATO on my 28 gal.nano cube.so far it's working great.now my cheap protein skimmer works a lot better because of the constant water level.pump's a little loud so I suspended just above bottom of container and now it's quiet.doing great so far.
Pretty OK By Benjamin on 4/10/2014
Benjamin would recommend this product to a friend
After avoiding a couple of floods when i first hooked it up, i think i finally have it dialed in. If the glass on where you are placing it, make sure to use a spacer, as the magnet affects the float. directions could be clearer about this. after I got it going correctly, i love it.
great By chuck on 3/24/2014
chuck would recommend this product to a friend
Worked great for my nano tank. was out of town 10 days and not one problem
Great Product By reefer63 on 1/29/2014
reefer63 would recommend this product to a friend
Installed in a half hour works great on my biocube 29 keeps water level constant no problem
Works like a charm! By 08TRDOFFROAD on 12/16/2013
08TRDOFFROAD would recommend this product to a friend
Installed this ATO on a Biocube 29. I had a little bit of an issue with the pump not shutting off properly after my initial install. After a short conversation with Tunze customer service we determined the switch was being interfered with by the magnet from my Tunze 9002 skimmer. I moved the switch to the other side of the return chamber away from the skimmer magnet, and it works like a charm!
Good By C on 12/13/2013
C would recommend this product to a friend
I am satisfied with the Tunze product
Best ATO purchase By Oscar on 11/26/2013
Oscar would recommend this product to a friend
I love this ATO easy to put anywhere either in sump or in your tank. I love that it had magnets not suction cups that easily fall of and can dump water into your sump. I also, love that it includes its own pump without the need to purchase one and the replacement its cheap aswell.
Ok product, but be careful By Nano Pete on 11/26/2013
Nano Pete would recommend this product to a friend
After almost flooding my basement twice and contacting Bulk reef supply; I was contacted by Tunze technician and he worked with me to fix my problems. When attaching switch with magnet onto sump glass the maget affects the switch if the glass is too thin. I needed to shim between the two magnets for the switch to work properly. Also, be aware of creating a siphon from reservior to were your supplying ATO water. As far as quality; You get what you pay for...
Pros- works as advertised.
Cons- doesnt come with clear instructions
Excellent ATO By Michael on 11/25/2013
Michael would recommend this product to a friend
I just installed this in a Nuvo 24 and it's working excellent to keep my water level exactly where I want it. The pump can fit right into a 5 gallon polyurethane jug without modification, which is really nice if you don't have a special RO Reservoir. It was easy to assemble and install and the pump is quiet enough to not bother my wife.
My only two complaints of this system: I wish the control box had tabs to mount with screws to the interior of my stand and I would love for the control box to have some kind of LED that either indicates the unit is powered or that the pump is on. I feel like for the price a single LED in the control box isn't a crazy expectation. Other than that it's an excellent product.
Great product By Bobo on 11/23/2013
Bobo would recommend this product to a friend
We'll built . It got to me very speedy with great shipping and packaged well. Works like a charm I will deff be getting another