I have a planted tank with an UGF, and am successfully keeping amazon swords, vallisneria, and cryptocoryne wendtii. I also have anubia, but since that is mounted on a piece of wood, it is not a real substrate plant. I have only used liquid fertiliser until recently, and in the beginning the root feeders (amazon swords) were not doing too well, but after the fish waste started to accumulate, they really started growing! Now, I also use some root tablets now and then.