I'm in the process of planting my 55 and I realized, as usual, I have no clue what I'm doing. Larger stemmed plants (Limnophila Aromatica, Hygro Balsamica, Ludwigia Repens, etc.) should have more space between the plants than the smaller stems, correct? 1/2" to 1" maybe? I tried checking out dutchy's pics for a clue but you can't really make out the bottoms and how close they are because he's too good at what he does.