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High Quality Aquarium Kalkwasser Supplement (Kalk) - 32oz GFO Granular Ferric Oxide - 32oz (1 lb.) CPR Aquatics Flow Eductor 3/4" MPT
Kalkwasser (lime water in German) is an age old method of maintaining calcium and alkalinity dating back to the development of the Berlin Method of reef keeping.  Kalkwasser is essentially a Calcium Hydroxide solution.  It works by capturing free Carbon Dioxide in your tank water and converting it into Bicarbonate ions.  This has a beneficial effect on your reef.  Kalkwasser raises the calcium, alkalinity, and pH as it is slowly dripped in. Granular Ferric Oxide (GFO) is a chemical filter media that inhibits algae growth in reef aquariums by removing phosphate from the water column.  There are two types of GFO that Advanced Reef Aquarium carries, a standard absorption variety and a special high capacity variety that roughly has twice the absorption power. A CPR Aquatics Flow Eductor increases flow and circulation in the reef aquarium.  This unit has a 3/4" male pipe thread adapter.

An eductor can increase flow by up to 4x the original flow coming from the pump.  They are able to accomplish this by sending a jet of water through a specially designed funnel.  As the water passes through the funnel, it suctions additional water through it thus multiplying the overall amount of water being moved.
Phoenix 150 Watt MH HQI 14000K DE Bulb Coral Rx Pro 1oz Phoenix 250watt 14000K SE Bulb
Coral Rx Pro 1oz

Our Price: $23.39

Phoenix 250watt 14000K SE Bulb

Our Price: $66.70


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The Phoenix 150 Watt Metal Halide HQI 14000K DE Bulb emits a crisp white light with a blueish tint that brings out the color of you fish and coral in your reef or saltwater aquarium.



Coral Rx is a great preventative protocol for dipping newly acquired corals, treating infected colonies, and quarantining coral.  An ounce of prevention is worth a ton of coral in this hobby.  Many of the headaches caused by malevolent pests can be managed up front by dipping your corals.  The first time we used it, we immediately saw inverts jumping off of the corals and quickly perishing. This 250W Single Ended Mogul 14000K bulb casts a crisp-white light with a blue tint. Great for bringing out the coloration of fish and corals while providing sufficient intensity for growth. An HQI, Pulse-Start or Electronic ballast is required.


-14,000K Color Temperature
-Made in Japan
-Excellent with or without actinic supplementation
-Operate on a HQI metal halide ballast, pulse-start ballast or electronic ballast