I personally am not a huge proponent of garlic. It may do something...it may not.., jury is still out
IMO.
You probably cant find anything about overdosing because no one has added garlic until things start to die. And honestly, why would you? I would think that the the compounds in garlic extract wont directly kill anything, but being organic, it will decompose and cause other water parameter issues. Exactly what, I'm not sure...
Based on my experience, you will be sick of the smell before too long. A few drops of that stuff goes a LONG way.
