Hi all, I am pretty much a newbie at this. I have a gravel substrate and want to start planting. I was thinking about adding a finer substrate to the gravel to "tighten" it up. I have Tetras, Danios, Gouramis, Killfish, Crayfish, Plecos, & Cats. I would love to hear the opinions of people way more experienced than me. And if this will work, suggestions on what substrate to use, easy plants to care for. And what is everyone's experience with plant anchor safety for the fish? I keep seeing lead and that seems concerning. Thank you for the help.