Aquarium ATO, Dual Sensor Upgraded Pro Water refilling Kit, Auto Top Off for Freshwater Saltwater Aquarium, Fish Tank Automatic Top Off System

I have tried electronic float switches on relays and gravity floatswitches that work without power and have the water damage to prove it. This item is the only method I've found for having a foolproof topoff system that does not fail. The alarms for pump running longer than average is nice sometimes but sometimes annoying depending on your use case. The included hosing and pump just seal the deal for this being the best aquarium item for automation. I wish the sensor was able to be placed a little closer to the rim but because it can only be oriented with the wire coming out of the top it can't sit flush, but I've made due for many months and still appreciate the work this system puts in for me.

Some guy wrote a review mentioning he bought the pump but didn’t name the ATO he was using for. Let me be actually helpful and say it works for the duetto ATO.

I'm sorry, these are just garbage. I ordered a total of three of these all within about the last 10 months, and none of them worked out for me. One that I ordered was missing the magnet that holds the sensor to the tank out of the box. One just flashes blue when the water level drops low, but the pump never comes on. I have cleaned the sensor and the pump, and even swapped the pump entirely, but the unit doesn't pump, it just flashes blue. And the last one, and maybe most importantly, this one very reliably will come on when the water level drops low, but will at random times inexplicably keeps pumping and pumping water until it depletes my ATO reservoir and floods my saltwater tank. This rapidly lowers the salinity of the aquarium to dangerous levels where I've had livestock die, and then saltwater from the tank is forced out, making a huge, huge mess. This has happen now three or four times at least in my short time having this ATO. I'm an simply sick of coming home to floods!!! I reached out via Amazon to the seller for help or for a possible warranty exchange, and I heard nothing in return but crickets. I will no longer trust these budget ATO's, I'll spend the extra on a name brand unit.

Purchased this to replace a pump that failed from a name brand ATO, sumpless version, after looking up the pump number. Just took out the old and plugged the new one in, has been working with no issues. Definitely thinking about picking up a extra to have on hand incase of another pump fail. As I have a saltwater reef tank, and not keeping that constant salinity is make or break. I also picked up one of there diamond ATO for a 2nd 10 gallon tank. So far has been working great and has a very similar design to the name brand ATO that is ×3 to×4 the cost.

lil finicky but gets the job done for a budget build

THESE ARE GREAT. I BOUGHT ONE FOR A TEST AND I NOW HAVE THREE! THE ONLY PROBLEM IS ONE IF MY TANKS IS 126 GALLONS AND THE GLASS IS ALMOST TO THICK FOR THE MAGNETIC SYSTEM TO WORK ON THE LASER. BUT IT DOES I JUST HAVE TO BE CAREFUL NOT TO KNOCK IT LOOSE. I AM 65 AND IT IS TOUGH FOR ME TO LIFT WATER INTO MY TANKS. WITH THESE I USE A LG PLASTIC TRASH CAN AND DUMP IT INTO IT. A PIECE OF CAKE. AT 85 I NEED ALL THE HELP I CAN GET! BILL HALE

Item says it includes power adapter, tubing, tubing holder, controller. The only item in the box is the pump.

Flashes red within a day or so after initialization on my aio reef tank. I’m glad I have a camera on the sensor to monitor this while I’m on vacation or I would lose all my livestock, thousands of dollars worth. Thankfully I have it connected to a Wi-Fi outlet so I have to reset it every day. I shouldn’t have to do this. Update: sent a replacement, working fine so far. I added couple stars. Still I would have lost everything if I didnt have a fail safe in place.

Perfect and I like it, you can leave a home for a while with out figure out about your aquarium

Works perfectly!! Quite easy to install except inserting the tube to the pump - just inserted back of the tooth brush to it for few secs, so once it expanded a bit I could fix it to the pump easily. Tested only 2 days, so far so good. However, the box shows 2 sensors which is quite confusing as I thought it’s the upgraded model with dual relay so I assumed I’m getting 2 level sensors.

The product works well but comes with a foreign power plug meaning I had to go out and buy an adaptor to use it in Australia. This fact should really be noted somewhere noticeable on the listing and adds to the expense of the item.

Dose the job