An t-iasg
Aquarium Advice Addict
Marsilea quadrifolia will make a nice ground cover. I was always pruning it out of my tank. It grows mostly in a long, straight row but very soon you'll have enough to cut some pieces off the main row and plant in another area. You can fill in the tank this way. I used plant anchors (the narrow, bendable silver strips) bent into a U shape and then inverted and pushed down over the runner to anchor it.
I think seven crypts might be too many for a 10 gallon tank. Crypts are my favorite plant and I had 7 or 8 in a 10 gallon. In about six months, they were too big for the tank and I thinned them out. I would suggest four to start. See how they grow and are doing in your set up. You can always add more if you want and think you'd like the look of a crypt-dominated tank. I also ran CO2 in my tank, so if you don't plan to, your plants, including the marsilea, won't grow as fast. I also like anubias too, and having too may crypts made the anubias less visible.
I think seven crypts might be too many for a 10 gallon tank. Crypts are my favorite plant and I had 7 or 8 in a 10 gallon. In about six months, they were too big for the tank and I thinned them out. I would suggest four to start. See how they grow and are doing in your set up. You can always add more if you want and think you'd like the look of a crypt-dominated tank. I also ran CO2 in my tank, so if you don't plan to, your plants, including the marsilea, won't grow as fast. I also like anubias too, and having too may crypts made the anubias less visible.