Free shipping over $99 Run on our own reef tanks Build your own and save up to 15% Free shipping over $99 Run on our own reef tanks Build your own and save up to 15%

Kits Bundle Builder System Sizer Lighting Filtration Reef Log Tell us your tank →

Lighting3 PRODUCTSJump MJ-L165 LED Razor R5-300 LED Razor R5-200 LED All lighting →

Flow & Circulation5 PRODUCTSGyre XF350 Flow Pump Gyre XF330 Flow Pump 4K Gyre Flow Pump All flow & circulation →

Return Pumps3 PRODUCTS4K DC Return Pump 3K DC Return Pump 2K DC Return Pump All return pumps →

Filtration10 PRODUCTSFX-STP3 Calcium Reactor Pump K1-Nano Media Reactor 4in Waste Collector All filtration →

Dosing & Testing6 PRODUCTSX4 Pro Dosing System X1 Pro Wi-Fi Doser FX-STP Dosing Pump All dosing & testing →

Controllers & Automation9 PRODUCTSKCM Dosing Controller ICV6 Controller HYDROS Leak Sensor Kit All controllers & automation →

Jump MJ-L165 LED — $199.00 Run on our own tanks. Bundle it and save up to 15%. BUNDLE BUILDER →

SHOPLighting Flow & Circulation Return Pumps Filtration Dosing & Testing Controllers & Automation ATO & RO/DI AccessoriesBUILD Starter Kits Bundle Builder System Sizer Tell us your tank MORE Your account The Reef Log Support

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THE REEF LOG

The Reef Log

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The reefer you'd actually ask for advice, in store form. Lighting, flow, filtration, dosing and controllers — run on our own tanks before we sell it. Equipment only, no livestock.

Questions? hello@marenmarine.com More ways to reach us →

Reef gear question? Ask the Reef Desk.

The Reef Desk Here to help · we reply by email

TODAY

Hi there — welcome to the Reef Desk. Ask us anything about gear, sizing a system, an order, or returns.

Tell us about your tank — volume, livestock, and what you're trying to dial in — and we'll point you to the right gear. Or tap one below.

The Reef Desk · [Hours — add before launch] · hello@marenmarine.com