i actually had alot of it melt because the moss tree that i have now is covering some of the carpet... that and i made the bad decision of not using co2
From what I've read, some aquatic plants can survive fully submerged and also emmersed due to the fact that most of these plants live in an area that has periods of flooding and periods where the plants are out of water. The dry start allows the roots from most plants to grow deeper because they need to reach a source of water. The established roots help when you fill the tank. Some plants have 2 forms for each environment also.