I have basic gravel and a sufficient full-spectrum tank light (it's switched off in the first picture). Right now I have Parrot's Feather, a Marimo Ball, and Java Moss, so I haven't had to worry about substrate at all and don't know a thing about it. I want something that can go up the height of the tank, so I guess I have to get something planted. I was thinking about Anacharis, but I don't know how I would get it to take root. Would I have to do an entire overhaul to replace the substrate? Any way I can get out of it? Or what else would you recommend I do to spiff up my tank?
I can tell Casper wants to weave in and out of something, because he'll do laps between the suctioned on thermometer and glass.
It's a 4.6 gallon tank.