Well ok, lol. I did a bit of stuff with Fritzyme 9 and it appeared to be full of heterotrophs, not true nitrifyers. I concluded that by the time it got to the UK it was pretty useless, link attached;It doesn’t and your right.
If it gives the reefer “piece of mind” then by all means.
We just don’t do it in our set up’s any longer.
Fritzyme 9 modified cycle
It wasn't a criticism. - Just - trying to figure out what you're trying to prove? Nothin to prove, just a ramble, I find rambling sends me off in interesting tangents. I do find it interesting that the nitrifiers appear to still work though, once the carbon source is removed, not suffocated...
www.reef2reef.com

because we're mid- evolution in changing ways. A lot of procedural battles are in place vying for best practices options that's really what it comes down to. What we'll be using to cycle reef tanks 15 years from now will be fascinating to see.

