I`m not sure about individual requirements for each type, but I do know that they are quite difficult to grow. I needed some medium to low foreground plants for a low light low tech tank recently and ended up choosing dwarf sagittaria because it one of the easiest to grow. Blyxa sp are probably the most difficult out of those I mentioned.
As for the algae, is it slimey and smell really bad? If so it could be a type of bacteria which blooms when water conditions deteriorate.
If not, and it is algae, well it could be any one of the following:
1. Increase in lighting.
2. Increase in fish feed.
3. Decrease in water changes or %.
4. Clogged filter/media.
5. Could of been brought in on recently purchased, undipped plants etc etc. The reason for algae blooms and how to stop it are discussed in the stickies. You`d be better off reading it for yourself.