SeaKlear (lanthanum) Shelf life?

FloodWaters

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@Randy Holmes-Farley
SeaKlear comes in a huge bottle and I have had my original one for literal years. Does lanthanum have an expiration date? Is there some sort of warning sign/test to tell if it has gone bad?

On one hand I get a bit worried about dosing something that has been collecting dust on a shelf for a couple years, but I also don't want to toss a big bottle of viable SeaKlear just to buy a tiny bottle of Phosphate RX based on unfounded fears.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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