Marine Depot offers FREE economy shipping for most products when you spend $39 or more! Your order will be delivered in up to 7 business days after it ships out. Economy shipping methods include UPS Ground, USPS First Class, and/or SurePost. You can also upgrade your shipping to Faster Shipping which speeds delivery to 1-5 days. 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.
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, oversize/overweight and items shipped directly from the manufacturer do not qualify for this special offer.
$5.99 Flat Rate Shipping For Orders Under $39
Most orders under $39 ship for only $5.99 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 $5.99 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 $5.99 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.
Automate freshwater replenishment, and say farewell to heavy lifting, unstable water parameters, and the need to frequently watch your water line.
Topping off evaporated water for our aquariums is a tedious but essential task that every hobbyist encounters to maintain stable specific gravity & salinity levels.
The HydroFill ATO Controller System takes advantage of your water`s conductive properties to complete a low voltage circuit and cause a control relay to actuate and replenish water as it evaporates. This departure from outdated float sensors, offers the latest automation in electronic sensing for precise accuracy, repeatability, and no-moving part reliability.
Customize your own "High and Low" set points to prevent constant On/Off cycling prone to single sensor design
Sensors utilize rare earth neodymium magnets for stationary placement and simple out of the box installation. Small form factor makes it the ideal choice for nano to full size aquariums. Two chemically inert graphite electrodes are housed in each sensor for redundancy & consistent long-term performance in harsh marine environments.
Have this ATO running for a year and a half. This is the second time that the sensors have failed. Fortunately, someone was around both times and was able to unplug before a disaster. Unreliable, especially for the price.
Ive had this unit for about 2 years now and recently it just started getting stuck on. It's not always consistent but a couple times it's emptied my resivoir causing my sump to almost overflow. The worse part it's caused some instability with my salinity which isn't good for corals. I thought about ...Read More
Ive had this unit for about 2 years now and recently it just started getting stuck on. It's not always consistent but a couple times it's emptied my resivoir causing my sump to almost overflow. The worse part it's caused some instability with my salinity which isn't good for corals. I thought about replacing with another one but now that I've heard so many others having the same issue I will be looking at other ATO units.Hide
When it works there is nothing better. But then, the sensor doesn't sense the high level and doesn't turn off. I have it connected to an outdoor 32g ATO reservoir. Let's say I did have it connected. The overflow caused complete floor damage totally $3k. Needless to say I'm out of the hobby. ...Read More
When it works there is nothing better. But then, the sensor doesn't sense the high level and doesn't turn off. I have it connected to an outdoor 32g ATO reservoir. Let's say I did have it connected. The overflow caused complete floor damage totally $3k. Needless to say I'm out of the hobby. Yes, I know. Should have had a backup system. However, do not buy this. The one that failed had already been returned to the Manufacturer and they said just keep it clean with vinegar. That may be true, but you better clean the sensors weekly. You have been warned.Hide
very easy to set-up, good build quality. Allows you to set the water level refill level with precision. I have a 200 gallon tank with a very sensitive skimmer- any water level change causes my skimmer to under perform. I would strongly recommend this product any ATO system with a float is a thing o...Read More
very easy to set-up, good build quality. Allows you to set the water level refill level with precision. I have a 200 gallon tank with a very sensitive skimmer- any water level change causes my skimmer to under perform. I would strongly recommend this product any ATO system with a float is a thing of the past. MY LFS has a sale running -Buy the controller, get the 99$ pump free, so you may want to shop around if you need the pump.Hide
As others have stated, sometimes it works and other times it does not. Unit got stuck in the on position and overloaded my tank with kalk. The good news was that I only had about 2 gallons of water left in my ATO bin, bad news was it still let enough kalk in to nuke 4-5 pieces of my SPS.
Most orders under $39 ship for only $5.99 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 $39+
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 $39 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 $5.99—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.
Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!
Earn 5 reward points for every $1 you spend to get 5% cash back Most Products
Earn 1 reward point for every $1 you spend to get 1% cash back Abyzz, American Marine, AquaIllumination, AutoAqua, CoralVue, Digital Aquatics, EcoTech Marine, Giesemann, GHL, Hanna Instruments, Hydor, IceCap, Innovative Marine, Iwaki, Kamoer, Kessil, Klir, Korallen-Zucht, Maxspect, Mur-lok, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, Radium, Red Sea, Reef Glass, Reef Octopus, Seneye, Somatic, Tunze, Vertex Aquaristik, and Waterbox Aquariums
You can also get bonus reward points by purchasing select items during special sales and promotions.
46,020 Reviews. 5,153,553 Products Shipped. #1 Aquarium Supply Store Online.
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0I10426Innovative Marine AUQA Gadget HydroFill Auto Top Off ATO Controller Systemhttps://www.marinedepot.com/innovative-marine-auqa-gadget-hydrofill-auto-top-off-ato-controller-system//www.f3images.com/IMD/1000/0I10426/Innovative-Marine-AUQA-Gadget-HydroFill-Auto-Top-Off-ATO-Controller-System-99.jpgInnovative Marine
OutOfStock
49.75USD3.314
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