PHOSPHATE & THE REEF AQUARIUM -By Kirk Masters Amazing Coral Reef
It is important to have some phosphate, silica and nitrate in a Reef tank. (For
a look at the phosphate cycle please refer to MOE or other reference texts. ) The catch is
not have too much. Phosphate reacts with calcium to form an insoluble calcium phosphate
particle. In any container it is first difficult to remove suspended particles as fine as
the precipatated phosphate. It is normal for fine particles to take days or months to
settle. When ever you have a cloudy solution, you have some thing suspended. (For tap
water use 1-1 1/2 tsp Kalkwasser per gal of makeup: for RO water use 1 tsp Kalkwasser per
gal.of makeup, agitate alot and allow to settle for a few hours. Use only the clear liquid
above the sludge on the bottom. ) In your Kalkwasser mix this is normally calcium
carbonate, CaOH and a little bit of Ca3PO4. Do not worry. Let it settle out in a few hours
and then drip it into your tank . ( A better method is to use 17 liter wine vats (plug the
top to prevent CO2 mixing) to store your make up and add 1-1/2 tsp Kalkwasser for tap
water and 1 tsp for RO water and plug the top. Let this settle for up to 5 days and then
you can prepare your Kalkwasser pH must be 12.4+ and use it right away. ) Your skimmer,
however is a great way to remove these particles from the aquarium. It was over 60 years
ago that Calgon first introduced phosphate in boilers to remove calcium in a high pH
environment. Calgon stands for Ca lcium all gon e. In a reef tank using Kalkwasser we
would say Phosphate all gone or Palgon. When you use Kalkwasser you must apply it slowly
over at least half of the day. Best is 24 hrs a day in your makeup water. CompanyAddress
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