The ATO to get By Jason on 1/18/2012
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.
ATO By TUBBY on 1/16/2012
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.
Makes topping off easy By Richard on 12/28/2011
Richard would recommend this product to a friend
definitely worth getting easy to set up, keeps water level perfect, no problems
great product a must have By james on 12/6/2011
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..
Perfect By Jose Manuel on 11/24/2011
Jose Manuel would recommend this product to a friend
Does the job perfectly. my water level is always constant, alarm has never gone off.
Great ATO By Frank on 11/23/2011
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
over all By Robert on 10/31/2011
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.
Best ATO on the Market! By Adam on 10/20/2011
Adam would recommend this product to a friend
This ATO has saved me from carrying heavy 5 Gal buckets back and forth across the house, and the two different sensor technologies give me a sense of security when it come to functioning properly and not becoming being stuck in the on position and overdosing kalk!
A quality top off unit. By Bob on 10/18/2011
Bob would recommend this product to a friend
I found this top off unit easy to set up and comes with everything you need(no extra pump or valve needed). I would highly suggest this product as the first choice. The only drawback I found is when installing the magnet sensor mount in the tank (instead of a sump) I found the trim along the top of the tank will stop the outer magnet from going as high up on the tank as I wanted but, the remedy is as easy as a clamp or tank silicone adhesive. I am using an old 5 gallon salt bucket for my top off water. I added a float valve and enough 1/4" line to reach the RO/DI system in the basement so I dont have to hall the top off water up 2 flights of stairs to fill the bucket. I installed a ball valve on this line and only turn it on when the bucket needs to be filled. Works great!
Some problems to begin with -- resolved now By ShawnCC on 9/28/2011
ShawnCC would recommend this product to a friend
I had some problems with this unit right off the bat...
Firstly, the pump didn't seem to be pumping anything. After several minutes of running (as evidenced by the whining noise), still no water was coming out. The ATO reservoir sits right beside the sump, so it only has to pump a few feet, and with about 14 inches of head. Finally, I primed the line using the age-old sucking technique, and from that point on it seems to be working.
The next, and bigger, problem was that the float switch, which is supposed to be the safety backup, was not working at all. Regardless of whether I lifted it manually or submerged it, no alarms would sound and the ATO kept pumping away. I contacted Roger at Tunze on their support forum at ReefCentral, and he confirmed that the magnets inside the float switch bracket were installed (by the factory) upside down. They are supposed to be at the bottom of the bracket, but these ones were at the top. Becuase the float switch itself operates on magnetic principles, the mis-aligned magnetic field was interfering with the switch, causing it to fail. After a botched attempt at fixing it myself, Roger is sending me a replacement bracket. No hassles--just a simple replacement.
The Osmolator and I still have yet to build a trust relationship. I've decided to plug it into one of my Apex controller's switched outlets, with yet another float switch (monitored by Apex). This way, the Apex can also kill the power to the top off if it detects levels getting too high. Redundancy is key.
The only other gripes I have with it, as other people have mentioned, are that it automatically runs the pump for several seconds when initially powered up (why?) and that the pump itself has a high-pitched shrill whiney sound to it, so it can easily be heard from outside the stand when it's running.
In general, after much manual testing of the optical eye sensor, I would say that it works quite well, and I am pleased with it. The price is hard to swallow, but I rent my apartment and it has hardwood floors, so I'm willing to take all precautions necessary to prevent overflow disasters.
Tunze customer service (Roger) has been very responsive, so in that regard, I give them (him) an A++.
perfect By illya on 7/10/2011
illya would recommend this product to a friend
This is a very nice ATO that keeps the level of water right where you want it. It saves me about 15 min a day at least from manually having to refill my sump, that's a lot of time saved after a while. well worth the cost, quality unit and you can tell a whole lot of thought went into this unit.
Only one flaw By Carol on 7/7/2011
Carol would recommend this product to a friend
Love this system but the only flaw is the pump does not last, after 3 months it starts to drips after pump is off and sometime its a non stop drip. I'm on my 3 pump now and the system is only 9 months old. But other than that its a great ATO sytem, I just keep a extra pump now.