The Innovative Marine Hydrofill Ti Reservoir is a next generation auto-top off reservoir and unlike anything we have ever seen.

We were lucky enough to see one in action while it was still in development so we could understand just how it functions and differs from other auto top-off containers you may have seen on the market. So keep in mind what you are seeing in the video above is a prototype and not the final product.

Made with hybrid glass and acrylic construction for long-lasting durability, the reservoir features an all glass reservoir with an acrylic drawer for refills.

Wait! A drawer? Yes!




First of all, an easy pull-out drawer for refilling the reservoir comes with a built in drawer stopper. Designed to save time and spills, the ingenious drawer means no more contortionist moves to refill the reservoir inside a cabinet.

It gets better.

A colored floating water level indicator lets you know when it is time to refill. No more guessing or peering through small windows. Corner protectors safeguard the glass construction, and it even has open rear cord and cable ports. The generous 4" x 1" rear opening leaves enough room for RO tubes, power cords and tubing. No matter how you set up your ATO, the Hydrofill Ti has you covered.

The reservoir has a smart design and 5 gallon capacity. Compact dimensions of 7.81" x 11.81" x 18.89" ensures an easy fit in most cabinets—but it is cool enough to show off next to the tank as well!

The retail price is expected to be $99.99. Available soon at Marine Depot!

Let us know what you think in the comments below.


  • 5 Gallon Glass/Acrylic Hybrid Construction
  • Clever Slide Out Refilling Drawer
  • Compact Footprint (7.87”x 11.81”x 18.89”)
  • Corner Protectors
  • Thumb screw drawer stop
  • Floating water line indicator
  • Pre-cut rear opening for pumps/tubes

UPDATE 12/13/16 @ 2:15 pm PST

We just received a new video of the actual production units. It will answer some of the questions we have received regarding the size. Take a look!