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Originally Posted by JasonC
From the JBL website link, know that high amount of PO4 and NO3 will cause algae growing. The excess PO4 and NO3 in the water are the algae nutrients.
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I will let Mr. Tom Barr answer that.
. See the links below, and many many more on the net, use Google...
http://www.aquariumpros.com/forums/s...ead.php?t=5799
http://forum.aquatic-gardeners.org/v...ic.php?p=2657&
Regards