I just purchased a Mangrove plant for my fuge . Is there any special care I need to take in order for it to grow? How far into the water should I place the roots? Should they go into the sand? My understanding is that the roots will grow down and eventually reach the bottom. Currently the roots sit about halfway down into the water. There are about 4 or 5 leaves/flowers on the stalk, will more grow or should I get more plants?