Is this product safe?

[Denbros]

Is this product safe? It is called Fluval Water conditioner. Not many people use it. I've heard many advertisements about the product.

Here's the link: https://www.amazon.ca/Hagen-Fluval-...r=8-1-fkmr0&keywords=fluval+water+conditioner

I don't know 100 percent if this product is safe.

 

[shellyx]

I use this and have for year's, think it's a great conditioner as it does more than one thing. I wouldn't use anything else ?

55 gallon elephant nose tank.
30 gallon shrimp and snail tank