Did I read this right? You leave your lights on for 72 hours straight? I just planted some HC in a new tank, so... if you've done it before and had good experiences with it I might have to try it. I thought the HC had to have a daily break to have a chance to grow. ? I'm a noob though!
No, it was by accident. But the HC seemed to like it, as well as the algae, though.