Hi, I have a 5.5g planted tank with anubias nana, hygro stricta and wisteria. I'm thinking of adding a crypt wendtii and something tall and grassy for the back (suggestions for a 10" high tank?). I've heard of Fluorish which I just pour in and the tabs which I burrow in the gravel. Should I get one or the other or both for the type of plants i have and are planning to get?