So I'm on here last night, reading and learning as always and I come across a thread about bacteria additives. Long story short it was about stability. I have always added a few capfuls everytime I do a pwc ( for 2 years now). I know this may sound dumb after I've been doing this for 2 years but I never knew it was a bacteria additive. My friend, who uses it as well, told me it was like aspirin for the fish and helps to de stress after a cleaning and such. He told me to use it when he helped me set up and cycle my tank. It doesn't say it's a bacteria additive on the bottle and I've never looked it up (until last night). Anyways someone on here told me it unnecessary to use, just use prime (which I do). I just want to make sure this won't affect my fish because I have been using it routinely? Any thoughts? Thank you in advance !!!