That is easy to prove or disprove. If I feed just one and it bubbles and none of the others do and it bubbles while the others don’t that would be an indication it might be true. If I then feed a different one and it were to bubble up and the other went back that is a better indicator. But it would take multiple people doing the same to rally prove it.if no bubbles form from feeding it pretty much dis proves that theory. I think there are plenty of people that feed there BTAs with out bubbles from what I have seen. I will try feeding one of mine weekly and see if there are any changes.