4" Narrow Fit Auto Top Off Reservoirs, Black

Advanced Acrylics has an uncompromising commitment to quality and craftsmanship that is demonstrated with every aquarium and aquarium accessory they make. Their Narrow Fit ATO Reservoirs provide an innovative solution for aquarists who are limited in cabinet space but don’t want to skimp on a quality reservoir for their water top off. Constructed from cell-cast ¼” black acrylic with beveled edges and featuring a clear front panel for easy water level monitoring, a hinged lid with knob for quick refills, and a pre-drilled 1.25” hole to run your pump plug; these slim ATO reservoirs make the perfect space-saving addition to any aquarium system.

Features

• Only 4” wide -- ideal for tight cabinet spaces
• 1/4” black acrylic construction
• Clear front panel to check water level
• Beveled edges
• Hinged flip-top lid with knob
• 1.25” hole for cord placement
• Fits all ATO pumps

Three Sizes Available (LxWxH)

• 4” x 16” x 12” 
• 4” x 20” x 16” 
• 4” x 24” x 20”

Model Comparison Chart

Looking for the perfect fit? Check out Advanced Acrylics’ other Narrow Fit ATO models in 6”, 5”, and 3”  variations.