Reagent Needle Guides for Neptune Trident, Original or NP

Colour coded needle guides designed for use with the Neptune Systems Trident (Original) and Trident NP reagent bottles. I design and 3D print them myself.

Made by Marine Spec. Not made by, endorsed by or affiliated with Neptune Systems. The Neptune and Trident names are used only to show what these guides fit.

How do I get the last of the reagent out of a Trident bottle?

Fit a guide under each reagent bottle lid. It keeps the pickup needle straight and at the bottom of the bottle, so less reagent is left behind when you change bottles.

Why are the guides colour coded?

Each guide is colour coded to match its bottle, which helps stop guides being swapped between reagents.

Which Trident versions are covered?

They are designed for the Original Trident and the Trident NP. Choose your version from the option on this page.

Using them

Fit each guide under the cap of the bottle with the matching colour, and never swap guides between reagents. Wear gloves when handling reagents. Rinse a guide in RO water and let it dry before moving it to a new bottle of the same reagent. Check that the pickup needle moves freely and the cap closes fully before you run a test.

Reagents and safety data sheets

I also sell pre mixed ABC reagents. See that page for what they are compatible with. My guide explains how to use ABC reagents, and the safety data sheets are on their own page.

More 3D printed accessories

See the Neptune AFS mount for a Red Sea pendant and my other 3D printed reef tank accessories.