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ROX 0.8 Premium Aquarium Carbon - 32oz Radium 250watt SE 20000K Bulb High Quality Aquarium Kalkwasser Supplement (Kalk) - 32oz
Activated Carbon is a chemical filtration media that is very well suited to remove dissolved organic compounds. Regular use of activated carbon will keep your water looking crystal clear and free from any foul odors. The German-made Radium 20,000K bulb is a legend in the reefkeeping hobby.  You will not have to look very hard to find a legion of reef aquarists that swear by this bulb.  For decades this bulb illuminated some of the most incredible show tanks in the world.  This metal halide bulb is the perfect blend of intensity and aesthetics with a long track record of promoting coral growth and color. 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.
ATI 48" Blue Plus T5 Bulb -54W Large Particle Lignite Activated Aquarium Carbon - GAC - 32oz ATI 48" Coral Plus T5 Bulb - 54W
Blue Plus
The ATI Blue Plus is arguably the most popular bulb made by ATI and possibly anybody else for that matter. As the 20k Radium is legendary among metal halide bulbs, the ATI Blue Plus is exalted in much the same way among T5 fluorescents bulbs. It is a very aesthetically pleasing bulb that does a great job showing off the fluorescence in coral.
Activated Carbon is a chemical filtration media that is very well suited to remove dissolved organic compounds. Regular use of activated carbon will keep your water looking crystal clear and free from any foul odors. Coral Plus
The Coral Plus is the most recently developed bulb by ATI. It is a blend of Blue Plus (50%), Aquablue Special (40%), and Purple Plus (10%). Some fluorescent fixtures do not have the luxury of 6-8 bulb slots for maximum flexibility in mixing and matching. The Coral Plus is a great stand-alone bulb in this regard because it mixes the most popular ATI bulbs in an attractive combination.