I wanted to cast the net a little wider and see if there is any other bacterial products I could grab that might give the same result - maybe help understand a false positive or show that Vibrant is not unique among "bacterial" labeled products in containing something that looks like QAC.
(each product was diluted 1/10 with tank water to eliminate extreme pHs that might exist in the bottles)
The apparent QAC were detected in AlgaeFix (1) and Vibrant (12) and no others. Here's the list of products:
1 AlgaeFix Marine
2 Waste Away
3 MicroBacter 7
4 MicroBacter Clean
5 Seachem Pristine
6 Fritz Zyme 460
7 Bacto Therapy, Fauna Marin
8 BioSpira (nitrifier)
9 One and Only (nitrifier)
10 EcoBalance, Dr Tim
11 Refresh, Dr Tim
12 Vibrant
Why is the method for detecting quaternary ammonium compounds seemingly detecting it in Vibrant (very effective at kiling algae) just like it detects it in AlgaeFix, but finds it no other claimed bacterial product?
Anyone got another suggestion for a bacterial product that might either contain QAC, or have a similar false-positive causing potential?