You know recently we had several tanks Crack, was it contagious? No I don't think so but the problems we're seeing now might be brought upon ourselves spreading problems to others & taking a while before they show up so you never think it was a problem, just like Pinched mantles, sometimes I think we may be overdoing / thinking things too much!
This isn't a proven science, not everyone is right or wrong either. J2Cents!
Very true Scooter, maybe we are, and I know what you mean. Maybe it is time to take our lumps and come back stronger.