This whole board is really frustrating with this stuff.
It's almost impossible to have discussions because a bunch of people who don't understand anything start jumping in and trying to correct people who understand things better than they do. It's infuriating.
I see AFR recommended to newbies all the time - and that minor carbon dosing can cause huge issues in newish dry rock tanks that are already phosphate deficient - and they're almost never aware that AFR is a big part of the problem they're having. Like 70% of the problems I seen in the newbie forum are "My tests say I have zero phosphates and zero nitrates, but I clearly have too much and the algae is just eating it too fast to measure. I'm dosing AFR for Alk, using Microbacter clean, and I still can't get this phosphate under control" and it's like - no, you've created an environment that's so deficient in nitrogen and phosphate that the only things that can grow are edge consumers who can either fix them from the environment, or barely use them (IE, cyano, etc). There was a guy on here the other day who had purple bacteria for cripes sake.
Anyone who is going to use AFR should know beforehand that it's going to drive down nitrates and phosphates. It's important.