My sister gave me some "Easy To Grow Live Aquarium Plants" for my birthday. The package says they're Aponogeton bulbs, they're easy to grow, and that they "thrive in almost all water conditions." The instructions say to just drop them in and they'll grow 6-8 inches in just 15 days and that the roots will just take hold on their own. I've never had any live plants because from what I've gathered they can be a hassle. So I guess what I'm asking is will these actually grow and live without me having to buy anything new, and will they take over my aquarium if they do grow?