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BISHY
05/12/2008, 01:42 AM
Can chemical products like purigen, phosguard, GFO etc be used effectively to create a ULNS ?
jansenwrasse
05/12/2008, 05:38 AM
What is a ULNS? Sorry :)
Boomer
05/12/2008, 12:48 PM
No BISHY they will not.

Jansen

ULNS =Ultra Low Nutrient System. Kinda like a Zeovit system