What is the difference between crispus and crispus red and their general care (mostly around bulb dormancy). I had a regular crispus but it went dormant (I think); but all articles i've red said it never goes dormant so i don't know if i should leave it in the tank or remove it. Now i see crispus red and i'm unsure if that is true cripus and how one would care for that plant. I'm not even sure if the green crispus is a true aponogeton or a hybrid of some sort.