Quote:
Originally Posted by Aqua-Digital
The water started at zero PO4. Today it is reading 25ppm PO4 and thats after a 75% water change only today.
I think we can conclude the rock i received to be leeching PO4 and the reason for the crash.
Do yourselves a big favour, before adding any dry rock, leave it in a vat of PO4 NSW and after 3 days test the PO4 level. It may just surprise you.
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It might be 25ppb PO4 ;P
And I am just too impatient to use dry rocks (maybe that's I don't like it?) and adding another lengthy step to setting up a tank.