Is Metricide 14 Excel, how safe is it? you decide!

[charlie]

https://www.sunkengardens.net/blog/2017/1/14/the-myth-of-liquid-co2-and-the-dangers-of-glutaraldehyde

[wolfiewill]

Yikes!!! This is good to know. I think I've bought my last jug of Metricide.

[charlie]

Anyone has a link or knowledge to counter this claim?

[lucius]

Found this, "I believe the infamous 'Polycycloglutaracetal' is a solution of Glutaraldehyde in water"

http://www.aquariumlife.com.au/showthread.php/54446-Excel-vs-Glutaraldehyde

http://www.oscarfish.com/article-home/equipment/114-buyer-beaware-seachem-excel.html

If you go on Seachem's website, Karen Randall is quoted on their site.  Could simply be Seachem's way of saying that bottled water is better than tap water.