Maintaining low nutrient levels is key to a healthy and algae-free marine aquarium

Some of the most successful reef aquariums employ the use of a macroalgae-filled growth area or refugium for the purpose of nutrient control.

The GRO is a specialized, 20W LED light designed to grow many types of common macroalgaes (i.e. Chaetomorpha) using a specialized light spectrum which maximizes photosynthesis. It plugs directly into any available DC24 port in your Apex ecosystem, or alternatively, it can also be run completely standalone.

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Feedback from Neptune Systems Insiders early adopters:

The Chateomorpha is growing very fast!
The light spread is incredible and bright.
I am impressed and it seems to be outperforming my last light.
Chaeto is thicker and seemingly more healthy than it has been in the past.
Wowsers does this thing grow chaeto!
The GRO made a HUGE difference over my previous light!
Cheato is still growing like a weed.

Read some of their stories in theGRO community forum

COMPACT

84 LEDS, OPTIMUM SPECTRUM

LARGE SURFACE AREA OF ILLUMINATION, LESS SPILLAGE

EVEN LIGHT DISTRIBUTION, NO HOTSPOTS

LESS NUISANCE ALGAE DUE TO LIGHT SPILLAGE

IP64, Water-resistant Design

CONNECT TO A FREE DC24 PORT

OPERATES STANDALONE AS WELL

TWO MOUNTING OPTIONS

REDUCE YOUR NUTRIENTS, THE NATURAL WAY, WITH A REFUGIUM

Its easy! Growing and harvesting macroalgae in a compartment in your sump, or in a full-blown refugium, is the natural way to reduce unwanted nutrients in your reef aquarium. It also creates a home and reproductive area for beneficial micro-fauna that consume waste and provide a food source for corals and fish. Growing macroalgae opposite your normal light cycle (called reverse daylight photosynthesis or RDP) also helps raise and stabilize your aquarium pH.

Only three things are necessary to get started:

1. A sequestered place in your sump or filtration area that has adequate water flow.
2. A start of macroalgae such as chaetomorpha get it online, from a LFS, or from a reefkeeping buddy.
3. A proper light source, like the GRO.

OPTIMAL LIGHT SPECTRUM, JUST WHERE YOU WANT IT

The GRO uses all its power to emit light in two specific wavelengths that are optimized for macroalgae growth 455-460nm and 620-670nm. This combined with its rectangular shape (have you ever seen a round refugium?) mean that the right light goes right where you need it and minimizes nuisance algae growth in other areas of your sump due to light spillage.

EASY PLUG AND PLAY SET UP

Remove the GRO from the box, plug it into one of your available DC24 connections on an Energy Bar 832 or 1LINK module, select GRO from the tasks menu, and in just a couple of minutes a step by step wizard will have it set up and scheduled.

BETTER MACROALGAE GROWTH USING LESS POWER

It may seem counterintuitive and possibly even fly in the face of some experts but with far less power than its competitors, the GRO promotes thick, healthy, and abundant macroalgae growth. The GRO does this by using 84 low-powered LED, selected for optimal macro algae growth, and spreads them evenly across a wide, rectangular area. This enables the GRO to be placed very close to the macroalgae and increase its efficiency while minimizing wasteful light spillage.

SHAPE MATTERS!

Nearly all other refugium lights cast light in a round, conical pat