DoseLine 4P Dosing Tube Holder


DoseLine 4P Dosing Tube Holder


(1 customer review)
  • Premium Craftmanship. Exquisite Profile.
  • 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.

Introducing neatness for your reef dosing.


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!


  • 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
Based on 1 review
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  1. JR

    Just like the variable height probe holder, this 4P dosing tube holder is perfect. Extremely well built, easy to set up, variable height adjustment, thumb screws (which just make things so much easier), and NO magnets! Thanks Oceanbox Designs!

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