[quote author=FinalPhaze987 link=topic=2679.msg35820#msg35820 date=1204426299]
Would anyone happen to know if we would be able to use this product in our tanks:
http://www.seachem.com/products/product_pages/FlourishPotassium.html
i know its K2SO4 and not KCl but isnt sulfur found in high concentrations in NSW?
[/quote]
According to Randy, it should be fine to use, just inefficient - it doesn't have much KCl for the weight/volume. FWIW, I used it a few times, and Hunter at lucky goldfish uses it. I think it prolly good if you aren't testing.