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Old 01/15/2020, 11:45 PM   #6
Tastee
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Join Date: Oct 2017
Location: Sydney Australia
Posts: 244
The liquid additives are all Lanthanum Chloride. It will precipitate the Phosphate out of the water and that precipitate is then removed by your skimmer. I have personally used Continuum Aquatics Phos Correx in my mixed reef with no issues. I believe all the well known products work pretty much exactly the same way and are reef safe.

Make sure however you are clear what you are trying to achieve as with these products it is very easy to strip all Phosphate out and cause more problems. Corals need some Phosphate to live. You can also easily cause a P/N imbalance and have Cyano problems.


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