Originally Posted by Mean Harri
Thanks Byron. That confirms what Mary at Sweet Aquatic said about potted plants being grown emersed and loose root plants are grown submerged. Stephanie posted a link to a website in another thread that has an article on plants grown emersed and states they will shed their leaves and new leaves will grow in. That is good to know because I would assume when starting a new planted tank you don't want all your new plants shedding and starting anew. Therefore I will look at buying more plants that are grown submerged.
I have kept and propogated Echinodorus plants for 20 years. The outer leaves will yellow, you cut them off, but by this time there will be new bright green leaves emerging from the centre of the crown. Even on established plants, this is common from time to time, growing cycles and such. There is no harm in the aquarium, the new growth is using the nutrients rapidly and the dying leaves are insignificant, though I remove them before they get too far gone and add more organics to the system. Most of the plants in my tanks lost all their original leaves within the first 3 months. B.