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Aquarium Supplies
Home » Saltwater Aquarium Supplies  » Dosing Pumps & Top-Off  » Electric Powered  » Plug-In Units  »  Hydor Smart Level Control ATO System
Hydor Smart Level Control ATO System

Hydor Smart Level Control ATO System

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Hydor Smart Level Control ATO System Information

Hydor Smart Level Control - water level management system

Smart Level is the new versatile fully electronic water level controller designed by Hydor. Smart Level safely and easily handles the aquarium and sump water level due to evaporation. Designed to be used in the many different conditions that exist in the marine and freshwater aquarium environment. Smart Level technology reduces the problems related to lime scale deposits, bacterial film, and wave action, which ensures the continuous, safe, and regular functioning of the Smart Level control.

For the SMART LEVEL Control, all types of pumps can be used, up to a maximum power of 50W. Choose a pump with a flow and head suitable for the type of use. Note that it is best to use a pump that tops off slowly within 10 minutes (maximum topping-off time).

Top-off pump required and sold separately.

Units now include a polarized socket and will accept a standard 2-prong plug.

Manufacturer Info

Hydor has been producing a comprehensive range of equipment for aquariums and ponds since 1984 and offers the best in high-technology for the creation of a living ecosystem at home. The factory has developed thanks to the engineering competence of its founder and its continuous growth is based on the investment it has made in research and the development of innovative technical appliances. A competitive and dynamic structure of more than 150 employees regularly engages in the implementation of products which meet the demands of 50 nations and keep pace with the evolution of the world markets. The global quality is not a simple working method but a daily expression of mind.

Hydor Smart Level Control ATO System Reviews

Average Rating
(11 reviews)
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of 2


Reviewers Rating Excellent!

Posted: 3/17/2014 from Lenoir City, TN UNITED STATES
5.0 5
Experience Level: Expert

Comments: Great product! Don't know what the "expert" on the first review is talking about the plug won't fit. If it doesn't, maybe you could use your expertise to file down the one side of the plug that is too fat to fit into the slot of the Hydor plug in pig tail maybe? LOL

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Don't buy this!

Reviewers Rating Unsatisfactory

Posted: 12/4/2013 from POTTSTOWN, PA UNITED STATES
0.5 5
Experience Level: Expert

Comments: Got this today & I go to set it up and the plug won't accept the ac plug from my pump. In fact won't accept any pumps plug unless it a hydro pump! That's something they fail to tell before you buy it. It's the biggest form of deception. I will never buy another hydro product ever again.Do Not buy this if you live the United States!

3 of 14 People found this review helpful, did you? Yes No

Great product

Reviewers Rating Excellent!

Posted: 10/22/2013 from BRUNSWICK, GA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I've been running this ato for around 4 weeks now, so far it has been a great product. The audible alarm is a great feature. I run it in my nano tank that needs topping off once a day and it has had no problems.

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Perfect! No moving parts. : )

Reviewers Rating Excellent!

Posted: 10/10/2013 from SAN DIEGO, CA UNITED STATES
4.5 5
Experience Level: Intermediate

Comments: Works perfectly! You have to adjust the amount of water being returned to the system with a valve so it does not over fill all the time. I am currently using a RIO 50 pump for my ATO pump.

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Hydor ATO

Reviewers Rating Excellent!

Posted: 10/3/2013 from COCOA BEACH, FL UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Im very satisfied with this ato.No float switchs or moving parts its spot on. Sensor works perfect and the magnet mount is strong.

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Not so easy

Reviewers Rating Average

2.5 5
Experience Level: Intermediate

Comments: Purchase this unit to help solve ATO needs. First unit DOA and Marine Depot did replace without any question. Called Hydor about fact unit is not UL approved, Female plug will not take standard 2 prong plug on most pumps without making major changes. They do not seem to have clue on problem and realize most products made in USA when 2 prong have larger blade that is neutral and smaller which is hot. Also believe that unit's I received which were manufactured in Italy label USA are to European standard and should not be sold in USA. Sent email to representative stating issue but no response. Would not recommend product for USA market.

2 of 7 People found this review helpful, did you? Yes No

Minimum pump time

Reviewers Rating Great

Posted: 9/21/2013 from CORAL SPRINGS, FL UNITED STATE
4.0 5
Experience Level: Intermediate

Comments: Overall this ATO is superior to the others that use float valves. The probe mounts simply in the sump area and when the water level reaches the lower probe level (minimum), it activates the pump in your water reservoir and should turn off when the water reaches the maximum probe. The one reason I didn't give it 5 stars is that there is a minimum fill time of 25 seconds. If your pump is too strong or you have a smaller sump like I do, 25 seconds is too long and too much water is pumped. I am ordering an even lower gph pump to accommodate the minimum pump time or will have to redirect water back into the reservoir. The maximum pump time is 10 minutes.

4 of 5 People found this review helpful, did you? Yes No

Nice but didn't work for me.

Reviewers Rating Average

Posted: 9/20/2013 from FOSTER CITY, CA
2.5 5
Experience Level: Expert

Comments: The device looked to be well made and was very simple to install. The insulated on/off switch was a nice plus but I had to return mine. The problem is the sensors take around 10-15 seconds to detect a change between wet/dry. This might not be a problem for most, but my top off pump replaces water in about 6 or 7 second. By the time the high water sensor shuts off the pump, the water level is already above the alarm sensor and it starts to beep. If your top off system is slow and takes 25+ seconds to replace water, then this is a good and inexpensive solution.

1 of 1 People found this review helpful, did you? Yes No

Hydor Smart Level ATO

Reviewers Rating Excellent!

Posted: 9/20/2013 from GREEN BAY, WI UNITED STATES
5.0 5
Experience Level: Expert

Comments: It's only been in use for two days, but so far, so good. I do like the fact that it attaches with a magnet, does not employ the use of a float, and it is not affected by water turbulence (waves) in the sump.

2 of 2 People found this review helpful, did you? Yes No

Works great!

Reviewers Rating Excellent!

Posted: 9/19/2013 from BUFFALO, NY UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Easy to setup. Simple design. I went with a pond master 140 pump. Using a pump too big will burn by the second sensor. All the diagrams took a bit of time to understand what they meant but essentially they are trying to show ways to prevent siphoning. The price is nice. Controller and sensor mount easily. Oh FYI the alarm is very quiet. It is hardly audible. It certainly won't wake you up. Depending on the sump location you may not hear it at all. I suppose if it was near the display it would be mildly annoying. The suction cup magnets work well but they attach to the sensor via one post so there is potential for accidental rotation.

1 of 1 People found this review helpful, did you? Yes No

of 2
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