Does Tetra Lifeguard Kill Beneficial Bacteria?

Tetra Lifeguard medication can kill both bad and good bacteria in your fish tank. Some users have reported that it completely killed the beneficial bacteria in their tank, leading to an uncycled tank.

However, it is effective against certain parasites and diseases. It is important to note that the medication is almost as caustic as other medications, and it kills more stuff faster.

If you use Tetra Lifeguard, you may want to have some bottled beneficial bacteria on hand to help with the load after treatment.