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Free Upgraded Shipping For Orders $250+
Most orders over $250 qualify for FREE upgraded shipping! Your order will be delivered 1-5 days after it ships out. Thanks to Marine Depot's two strategically located warehouses in Nevada and Georgia, over 90% of shoppers receive their orders within 1-2 business using this level of service. Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Free shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for this special offer.
$2.99 Flat Rate Shipping For Orders Under $29
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in up to 7 business days after it ships out. Orders placed before 10:30 am PST Monday-Friday are shipped the same day. Our $2.99 flat rate shipping is only available within the contiguous United States. Frozen foods, live foods, and items shipped directly from the manufacturer do not qualify for $2.99 flat rate shipping.
Frozen foods are delivered 1-3 business days from the day your order ships. Frozen foods are shipped every Monday and Tuesday. Shipping cut-off is Tuesday at 10 am PST (1 pm EST). Orders received after 10 am PST on Tuesday will be shipped the following week. Shipping and handling is a $19.99 flat-rate charge so you can order as much or as little as you like.
Orders not shipped within the contiguous United States—the 48 U.S. states on the North American continent south of Canada plus the District of Columbia—are considered international orders. International orders are not eligible for Marine Depot’s free shipping promotions and additional surcharges may apply. It is important to note that not all products we carry can be shipped internationally. Any brokerage fees, tariffs and/or taxes will be billed to you directly by the shipping courier. International customers must use the same billing and shipping address.
XP Aqua Duetto Dual-Sensor Complete Aquarium Auto-Top-Off ATO System
Why Choose Duetto ATO ?
With huge features jammed in a tiny package, the Duetto is the perfect ATO for your aquarium. XP Aqua’s proprietary dual-optical sensor packs two precise level sensors in one incredibly small package. In addition to keeping your water level constant, the two sensors also work in concert with the intelligent QST programming to help prevent overfilling.
All the installation parts are included and a magnetic coupling allows you to easily mount or adjust the dual-sensor. Installation takes just seconds so you can spend less time working on your aquarium and spend more time enjoying your aquarium.
Features:
World’s smallest dual-sensor ATO
Two layers overfill protection
QST (Quick Security Technology) provides real-time failsafe protection against failure
Secondary optical sensor
Super precise water level control
Super easy installation; plug-and-play
No programming or adjustments required
Audible and LED light alarm
Works in complete darkness
Specifications:
Model: DATO-200P
Power Input : 100~240VAC 50-60HZ
Cable Length of Power Adapter: 180 cm (6 ft)
DC Pump
Head : 8.2 ft (250cm)
Flow Rate : 74 gph (280 lph)
Max mounting thickness : 1/2" (12.7 mm)
Power : 4.5 W @ DC 12 V
Pump Cord Length : 6 ft (180 cm)
Length of Cable between Sensor and Controller : 180 cm (6 ft)
**Please avoid setting up the sensor in an area with micro bubbles or direct light.
Manufacturer Info
Ever since the ATO systems were invented by Tunze in 1985, they have been helping saltwater reef aquarium hobbyists maintain stable salinity levels and offering a ton of convenience. ATO is short for ‘aquarium top off’ system. It is also called an ATK ‘aquarium top-off kit’, or osmolator / osmo regulator in Europe. Here at XP Aqua, we have combined all the best ATO technologies and added several proprietary features to create the safest and most dependable ATO money can buy! Our micro sized ATO sensor features two precise optical sensors to offer you more protection. Additionally, each XP Aqua ATO system includes our intelligent QST programming to prevent overflows. If you are looking for the best ATO system, check out our awesome line of ATOs!
Ask a Question Earn 15 Points when you answer a question
Just a little longer than a years worth of the unit working it dies, does nothing but beep. I cleaned off the sensor so there was nothing on the sensor, plugged it back in, goes through the setup steps, beeps, pump does not turn on and beeps agian.
This product works great!! I used it for about 5 months and I had a sensor malfunction, no problems I sent an email and they replied back with 24hrs. Great customer support.
This product has been almost entirely no hassle since I bought it. The ONLY issue I had was after 1 year, the pump stopped working inexplicably. However the sensor notified me that something was wrong, and I was able to troubleshoot immediately. I emailed the customer service that night, and they...Read More
This product has been almost entirely no hassle since I bought it. The ONLY issue I had was after 1 year, the pump stopped working inexplicably. However the sensor notified me that something was wrong, and I was able to troubleshoot immediately. I emailed the customer service that night, and they had a new pump in the mail the next morning. Customer service is friendly and super helpful.
I used this automatic top off to replace my two-year-old unit that wasn't reliably doing the job. The new unit was easy to get up and running and is working perfectly. I couldn't be happier.
This system works well, and the setup was extremely simple. The pump is sufficient, and the sensor is spot on. I do imagine that I will need to clean it regularly to avoid salt creep, but all equipment needs the same attention in this hobby. I do wish that it came with a pause function for other tan...Read More
This system works well, and the setup was extremely simple. The pump is sufficient, and the sensor is spot on. I do imagine that I will need to clean it regularly to avoid salt creep, but all equipment needs the same attention in this hobby. I do wish that it came with a pause function for other tank maintenance, but it can simply be turned off.Hide
Most orders under $29 ship for only $2.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in up to 7 business days after it ships out.
free shipping for orders $29+
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in up to 7 business days. Just spend $29 or more!
free faster shipping for orders $250+
Over 90% of shoppers receive their orders within 1-2 business days. Upgrade from free economy shipping to faster shipping for only $2.99—or spend $250 and we'll upgrade you automatically!
need your order even faster? no problem!
Expedited shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
buy it today and we'll ship it today
Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
live plants, live foods, and frozen foods delivered to your door
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
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