Coral Box D500+ Protein Skimmer

(3 customer reviews)


The Coral Box D500+ is an affordable, controllable, and efficient protein skimmer and is ideal for 100-175 gallons of water volume.

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SKU: GK-RVLM-1EBY Category:



The D500+ Protein Skimmer has an internal DC powered pump which greatly reduces its footprint. The Base has a diameter of 7″, 7 3/4″ including the gate valve. The skimmer is 20 1/2″ tall with a neck diameter of 3.5″. The Cup diameter is 7″ with a height of 5″. The skimmer cup has a drain that includes a drain hose and valve.


Every Coral Box D300+ protein skimmer includes a fully controllable DCA2,000 pump. The pump includes a controller with 10 output modes, which allows you to adjust the flow rate from 10% to 100%. There are 3 feed timers, 10 minutes, 30 minutes, or 50 minutes with 1, 2, or 3 presses of the feed button respectively. Press the button a fourth time to end the feed timer and power the skimmer back up.

The DCA pump also has a built in slow start feature, meaning it starts at 0% and slowly builds up in power until it reaches your flow setting. Every pump includes a float switch, which can be mounted directly into your skimmer’s collection cup. When the cup is full, it will shut your pump off and sound an alarm. The days of bubble filled sumps are over!


The Coral Box D500+ Protein Skimmer is powered by a sine-wave DC controller. Sine wave controllers use a specific electrical frequency to reduce noise while the pump is running. All you hear is the gentle intake of air and the resulting turbulence from the needle-wheel impeller.


The Coral Box D500+ uses less power the lower you run your pump. At full power, the Coral Box DCA2,000 consumes 20watts from the wall. At 50% power? 10 watts. They’re not only efficient in terms of power use. The DC pump allows you to dial in your skimmer on a level unmatched by AC pumps. That means you can dial in your skimmer to match your tanks specific needs.

The Coral Box D500+ Skimmer works on medium to well stocked tanks between 100 and 175 gallons in total water volume. 

We provide a 12 month USA warranty on the DC pump and the skimmer body.

Ships From and Serviced in Wakefield, RI USA

3 reviews for Coral Box D500+ Protein Skimmer

  1. Anonymous (verified owner)

  2. James T. (verified owner)

  3. Matthew Nelson (verified owner)

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