We carry some of the top ATO names in the industry - from companies such as Hydor, Innovative Marine, and AutoAqua. The reason we carry these select four units is because of their proven track records of dependability, precision, and exceptional customer service. Each ATO is backed by a company with years of producing proven products that have assisted thousands of hobbyists in maintaining their reef tanks. We listened to many customer reviews when it came to the Auto Top Off Brands we stock here at Reef2Land.
If you are new to Auto Top Off Units, the way they work is by placing a small sensor inside of your sump where you wish to keep your desired water level. A water line is then fed into an ATO Reservoir that contains purified RO/DI water. As the water evaporates from the display tank, the Auto Top Off Unit draws water from the ATO Reservoir and replenishes what evaporated from the tank. These units are both economical and a great addition to any tank as an added safety feature. This leaves you more time to enjoy tank rather than tend to it.