I googled "active ingredient in tetra lifeguard" it is: 1-chloro-2,2,5,5-tetramethyl-4-imidazolidinone
If someone were really interested, the complete study (above) may have references to other studies of this chemical as a disinfectant/antimicrobial.I've responded to a post like this before not too long agom
Basically, it seems kind of experimental and novel for fish. I didn't find a whole lot of definitive information when I researched it before.
Well... That sounds weird. A type of chlorine? How would I know if my conditioner is neutralizing the med? How long do I need to wait after conditioning the water before using this? Sounds easy to misuse/improperly use/mess up.
I think using a dechlorinator plus carbon and a water change would be the best way to be sure you've removed all of this chemical since clorine is only one of the atoms included in the complex structure of this "medication".
Like I said, seems easy to mess up, especially since it's targeted towards new and/or not really informed fish owners who probably don't even know what carbon actually does, much less all the steps to take to remove this product. :/
Read the above abstract link I provided. It tells you exactly what it is and why the chlorine in it is 'safe' for use in the tank!I emailed tetra and asked them was it safe for angels, discus & what was the main ingredient. They told me it’s a form of chlorine & that water conditioner will neutralize it.
Finally I got an answer to what lifeguard is.