as odd as this may sound, years ago I broke a flower that was raised on crawlers to shrimp and pellets by boring a hole through a small chunk of shrimp and threading a large live nightcrawler through the hole and tieing the nightcrawler into a knot. the crawler would squirm but not before the flower would eat it and the shrimp. eventually, after a few days I put a couple crawlers tied with shrimp and some plain shrimp and she ate it all. eventually, no crawlers at all.i actually did a thread about it.i think it was titled cracked my flower. there were pictures and such in the thread if you want to look.