Congrats on your purchase. I love the way it looks in the tank. I would classify myself as a novice and mine is growing great. My dsb
kicked in so nitrates have gone away, but it was doing okay when I had nitrates. It is starting to spread now that they are not registering on my test kit.
You can use your nail or something else and scrape the bottom off the rock if they spread where you don't want. I originally was going to have them growing up the glass, but I like the look of them so much I put them right in the middle of the tank! Good Luck.