The long green stuff finally kicked in and WOW! within 24 hours it was seversl inches long. That was yesterday, today it can be pulled out in foot long slimy noodles. I am reconsidering allowing the fish to eat it. I bet they have the sense not to eat toxic forms (I will look into it) and think I the one non toxic species will dominate anyway. I am really stoked about my new design. I can't wait to prototype it and am going to apply for a patent too.