I still dont get how having a couple damsals in something as large as a 40g.. or in my case a 29g, could hurt them/anything else. As long as you lock up the ammonia.. no harm, no foul. I have noticed though.. most who use fish to cycle.. those fish have usually outlived all the other fish... My bala's were used in my FW
tank.. and have done fine thus far.. They are more energetic than most fish ive seen..
I guess its one of those things.. if you can live threw it.. you grow stronger kinda things.