Originally Posted by CathrynFish
Today I started with the Tetra Treatment (I've used this before and it's worked amazingly!). I dropped the little pill in and left it there to dissolve.
Is "Tetra Treatment" the full name of it? Or are you talking about Tetra Lifeguard All-in-One Treatment?
If it's Lifeguard All-in-One Treatment, the active ingredient is "HaloShield" -- which is also known as 1-chloro-2, 2, 5, 5-tetramethyl-4-imidazolidinone.
The info that I found says it ingestion by HUMANS
is unlikely to cause significant problems, "but consumption of large amounts may cause stomach upset and irritation." (source is here)
Tetra offers a support forum where you can ask questions about their products. Go here, then click the "Ask Tetra" tab. http://www.tetra-fish.com/sites/tetr...l.aspx?id=4243