About Fjord4D

Fjord4D is the personal hobby project of Bjorn Shtender, a retired civil engineer who began designing reef aquarium accessories with the team at TreasureCorals.com.

Why 4D and Not the Familiar 3D?

We replaced 3D with 4D in the name to bring in time as the fourth dimension.

That fourth dimension comes into play at the Treasure Corals farm, where the team gave Bjorn the opportunity to help set up and maintain a coral propagation tank. Using his designs day to day shows him what holds up and gives him ideas for new tools. It also shortens the design cycle because he can spot a problem, make a change, and test it during routine coral care.

Featured Designs

■ Light Visors (Blade & Radion) — direct light and reduce glare
■ TestKit Caddies — keep reef test kits organized
■ Frag Racks — hold coral frags in the tank
■ Fragging Tools — help cut and handle coral frags
■ Accessories — simplify daily tank care