https://goo.gl/UAPjXv An auto top-off system senses when your aquarium loses water from evaporation and automatically replenishes it—which keeps your salinity level stable and filtration equipment running smoothly.

Over the years, manufacturers have devised a few different ways of accomplishing this task. In today's video, we are going to explain how the hobby's most popular ATO systems work, from the most basic to the most advanced, to help you determine which system will best fit your tank and budget.

VIEW ACCOMPANYING BLOG POST (with full video transcript):

https://goo.gl/WqhonY

SHOP ATO SYSTEMS:

https://goo.gl/ysWUPA

SHOP ATO RESERVOIRS:

https://goo.gl/7KKTnX

READ/LEARN MORE ABOUT ATO SYSTEMS:

https://goo.gl/Cr45tb

Questions? Contact us! Call 1-800-566-FISH (3474) or email customercare@marinedepot.com

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Until next time, take care and happy reefkeeping.