Designed for aquariums approximately 20 gallons and larger which use a canister filter with 1/2" diameter tubing.
Cal Aqua Labs glassware is hand-blown using only the highest quality, laboratory-grade, borosilicate glass for maximum strength, durability, and visual clarity. Each piece is unique.
Tube Diameter: 13 mm
Canister Filter Outflow Tubing Size: 1/2"
Recommended for Nano aquariums approximately 20 gallons or larger.