I was considering putting macroalgae in my main display tank, to give it a little more natural look. I have Caulerpa Prolifera, which looks very nice, as it is long bladed, and not the typical "sawblade" type of caulerpa you usually see...it looks more like seagrass. Problem is, I don't want to have to manually prune it down every few weeks, so, I was wondering if anyone knows of inverts or fish that will keep it in check for me. I know sea hares eat it as their primary food source, but, I really dont' want one of them, one, because they're huge, and will probably knock everything over, and two because they secrete a toxic ink when startled by, say, a fish that picks on it. Any ideas?