Need ideas for plant aquascaping

Cool, shaving brush is fairly easy as far as macro goes. Usually I see it in the sand bed. Also, you may want to look at Halimeda. The only thing with calcerous algae is you have to keep up with calcium and alkalinity supplementation, but it is not as difficult to keep as some other algae. caulerpa is probably the easiest, but it is really invasive and can take over. Calcerous algae doesn't grow as fast and is easier to control. You may need to dose iron and possibly a KNO3 supplement if you do not have high enough inorganic nitrogen levels, such as nitrate.