Planted Tank Enthusiast
Join Date: Dec 2008
Location: Kansas City, KS
Metricide is a Gluteraldehyde derivative as well. 2.6% I believe (which is the reason it's "stronger" than Excel) If anything buy this and don't mess with trying to dilute your own Gluteraldehyde. THAT is some nasty stuff lol.
(although mistergreen is right in warning about this stuff as well, it's also fairly hazardous)