Yeah I was gonna use that, because I will be adding them to a new setupI saw someone mention Bacter AE in another thread. I looked it up and it said that it enhances the development of biofilm.
I read a lot of positive comments. But I'm sure there are probably just as many negative ones...
Apparently it is used in moderation and not near as often as the instructions call for, so it must be potent stuff.
No real experience with it myself. But if it was a choice of using that or tinting the water in a tank I wish to remain clear, I'd give it a try.