Deciding on an ATO

[SLPMonkey]

Hi All!

I just set up my first reef tank. It's a 40 breeder with 2 HOB filters. I'm looking into getting an ATO, but it will have to sit in the display tank because I don't have a sump. Does anyone have any advice on a good ATO for my tank? So far I was looking at the Tunze Osmolator Nano 3152 and the JBJ Automatic Top Off System With Acella Powerhead/Pump.

Thanks!

-Sarah

[Luke Schnabel]

Get the tunze. Without a doubt best for hobby grade.

[JohnnyHildo]

+1 tunze osmolator

[bmitchell138]

I have a similar setup to yours. The Tunze Osmolator 3152 is the one I ordered. It's supposed to be very reliable.

[gone fishin]

I have used the JBJ and the Tunze. I prefer the Tunze.

[JammyBirch]

I recommend the SMART ATO, I think it's a smaller footprint than the Tunze but I'm not sure. Heard good things about the Tunze also.

The SMART ATO runs perfectly and the customer service is first class. I had a pump go bad more than a year after installing and they sent a new one next day at no charge. Give them a look.

[LQT]

Just note, if you do go with the Smart Micro ATO in a sumpless tank, you will have an always on blue LED light shining into your display tank at all times.

[Darryl Hey]

tunze osmolator you can use the nano since it is under 50
i use one on my 40 breader and the full size on 65 and 125

[MrMatt83]

AVAST marine ato and 2 aqualifter pumps in sequence to on my sumpless tank

[zelie_dad]

tunze osmolator you can use the nano since it is under 50
i use one on my 40 breader and the full size on 65 and 125

Is the recommendation for total volume? I'm running a 40b/40b setup with probably 60-65 gallons of total volume (I'm actually unsure how to get a better estimate). I need an ato, but $200+ for the tunze seems excessive. I was looking at the nano one, but I wasn't sure it would work with my system. Also, I'm not sure how it can tell the difference. The only difference I've seen between the two is the addition of the "eye" sensor.

[CafeReef]

The pump on the 3155 and the 3152 is the same. The controller is the only thing different. Pump run times and length of time failsafe etc is the big difference. Personally, I think the nano should only be used on 30 gallon and under. And frankly the 3155 full size can be used just fine on those size setups, the sensor and float is just larger is all.

3152 is float shutoff. 3155 is sensor shutoff with a float failover shutoff.

[VWD]

Tunze Osmolator 3155

[JammyBirch]

Just note, if you do go with the Smart Micro ATO in a sumpless tank, you will have an always on blue LED light shining into your display tank at all times.

Ya you're right, that's a new model. I have the other one, no LEDs facing the tank.

[lafanblue]

I agree with most... Happy with my Tunze 3155. But I will say this the pump is a bit loader than I thought... My tank is right off the living room and I can hear it every time it comes on.

[MidwestReefa]

I'm looking at the Smart Micro ATO myself... reviews seem pretty good so far but it is a new product..

[Kentech5]

I just bought a smart ato micro, its been running in the tank for about a week so short term id say its been great. Now ask me again in a year and hopefully I will still feel this way.


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[no1bubba]

TUNZE Had two ATO 's and now I know what great top ou system is. Can't go wrong

[Scottshopinc]

i went with the tunze ato from brs, had some discount coupons to use up. I hope it works out great like everyone says it will.

[r3joe]

I've had mechanical ATO's get stuck and cause a flood once before. I'm pretty paranoid so I bought the Smart ATO this time around.

[hossa81]

Just wondering, has anyone tried autotopoff.com?

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[BigEZ77]

I have the Tunze nano and have had no issues with it. Its done a great job for me thus far.

[BlurrVT]

Another vote for the Tunze. It's a great ATO.

[Burtonboy182]

Started with jbj and now have Tunze
Tunze+1

[SNAKEMANVET]

I have been use autotopoff.com floats sensors for 5 years and have never had a problem.But have had to replace the aqua-lifter pump.I just clean my floats every 6 months or so.I think I spent around $65.00.