Yea, perlite seems like a algea rock to me. [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_n_32.gif[/img]
I mix 50% sand and 50% peat. *Then I top it off with just sand now. *Looks cleaner and I think the moss has a harder time growing.
Also you can top it off with LFS.
Get some dried and wet it down and lay it on top.
You can also chop it up and then put it down.
I think the spores or seeds from the dried spagnum will grow eventually after some time. I have this on my outdoor mini mini bogs.