4 Gallon ATO Reservoir - White

In stock

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Quality Craftsmanship Where Form Matches Function

  • Holds 4 Gallons / 15 Liters of fresh water for auto top off systems
  • Hand-crafted, premium 100% acrylic construction
  • Recessed flush mount lid with finger cutouts for easy removal
  • Clear front panel with engraved graduated measurements
  • Cutouts for ATO pump power cables and water hosing
  • Apex pump and sensor mounts
  • Twin 1/4" John Guest input/output fittings
  • Modern, all-black finish with white accents



Volume - 3.96 Gallons / 15 Liters

Dimensions - 3.94"L x 15.75"W x 15.75"H

Input/Output Fittings - 1/4"


Hmahli is an Australian family-owned business taking the industry by storm. Each of their hand-crafted, premium acrylic aquarium life support systems is designed to achieve the best possible product performance at the best value. Each product has been thoughtfully designed by reef hobbyists to ensure that form and functionality go hand in hand for ultimate product usability. 

More Information
SKU 250304
UPC 850034045016
Dimensions 3.94"L x 15.75"W x 15.75"H
Total Volume 3.96 Gallons / 15 Liters
Color White
Input Size 0.25" (1/4 in.)
Output Size 0.25" (1/4 in.)
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Product Questions

What are the dimensions of the lid? Will I be able to fit a Tunze ATO pump in it? I believe they are 2" wide.
Question by: Patrick Burke on Aug 25, 2022, 9:35 PM
The top dimensions are 3.96" by 15.75" but we do not have the specific lid dimensions. That said, the Tunze should fit fine/
Answer by: Scott F. (BRS Staff) on Sep 2, 2022, 4:51 PM