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DoseLine 4P Dosing Tube Holder - Oceanbox Designs, LLC

DoseLine 4P Dosing Tube Holder


DoseLine 4P Dosing Tube Holder by Oceanbox Designs®

Ready to keep your dosing lines sleek and neat?

The Oceanbox Designs® DoseLine™ 4P Dosing Tube Holder is a premium made and exquisitely designed to match your favorite dosing style from Apex, GHL, and Red Sea. Our innovative single screw hang-on mount fits over glass sumps rim or acrylic baffle up to 3/8″ thick with a sleek profile over the u-shape bracket with two thumb screws. The variable height adjustment of the tube holder unit can accommodate different water level in your sump, up to 2.75″ in varying height in the guided rail and up to 7.5″ depth (from top of the rim). Last but not least, no metal or magnets being used mean no chance of rusting anytime, for a LIFETIME!


  • Premium & Exquisite Design.
  • Matching Color Scheme for Apex, GHL, Red Sea style.
  • Hang-On Mount (No Magnets, No Rust!).
  • Barb Fittings for Maximum Airtight.
  • Adjustable Height with Dual Locking Screws.
  • Accommodate Sump Depth up to 8″.
  • Designed and Made in Texas.


  • Unit Dimensions: 6-1/4″H x 3-1/2″W x 3-1/16″D
  • Compatible Sumps: CADE, MODE, Red Sea Aquariums
  • Max Glass Thickness: 3/8″
  • For Tubing Size: 3/16″ and 1/8″ Inner Diameter (adapters included).
  • Materials: Acrylics, 3D Printed Reef-Safe PETG, Nylon, Silicone

What’s included?

  • 1x Hang-On Bracket
  • 1x 4P Tube Holder Unit
  • 3x Thumb Screws
  • 4x 1/8″ to 3/16″ Barb Fittings
  • 1x Instruction Manual

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