09-03-2010, 04:53 PM
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Ouch... I hate to tell you but some (possibly most) of those aren't true aquatics... They may do well in your aquarium for a week or two, maybe a month or two, but they will eventually die. They're great for terrariums though.
The first one... I have no idea. It looks terrestrial to me though, and I think you have it buried a bit deep....
Nice cabomba and pennywort behind it though. :)
The second one looks like some sort of terrestrial fern...
The third one could be a java fern which is aquatic, but the picture is too dark to identify it..
The fourth one looks like creeping jenny, AKA Lysimachia Nummularia... It's a terrestrial groundcover, I've been looking for some for my front yard... Fortunately, it seems to do relatively well submerged in aquariums. Keep an eye on it like the rest, but it will outlast the others and may be a good fit. It's just like any other stem plant.
The fifth is (I think) Bolbitis heudelotti... It does well with water movement, so put it close to the filter. It likes to be tied to objects rather than rooted in the substrate. If you do keep it in the substrate, make sure not to plant it too deep... I would reccomend just placing a small rock over it to hold it on the substrtate until it roots itself.