Kicking PO4

[danmhippo]

Randy,
I have heard adding kalc helps to reduce PO4. But how exactly does that happen? Is it always PO4 that is first reacted? What is the condition that must be met when dosing kalc to make sure that happens?

Thanks.

[Randy Holmes-Farley]

Craig ran an experiment where it appeared that limewater reduced phosphate. I've not seen that experiment repeated or verified. I don't know if it really has an effect, or not.

Here is an article on phosphate that provides some speculation about what might be happening:

http://www.animalnetwork.com/fish/library/articleview2.asp?Section=&RecordNo=2481