I'm beginning to think I shouldn't have used any "old" rock in my new tank. I am seeing those dastardly little aiptasia's crop up here and there and most of them are growing in the back rocks where I can't get to them to zap them. Not that I've found anything that zaps them very permanently. I've tried everything and they just come back. The fact is, everything is really happy in my new tank, INCLUDING the aiptasia!! I thought at one time that someone on here tried breeding them? How did that go?? I'm considering get a few and trying them and just thought I'd see if there was any experience on here to draw from. Thanks!!