Indentifications? (pic-heavy, not bandwidth-heavy.)

[Chibils]

I have three species of unidentified algae growing in my dt. Number two I believe is Bryopsis sp., but for all I know it might be filamentous hair algae.
Pictures are taken with a Nikon D70 DSLR camera and Reeflux 12000ks.

UID spp. #1:
http://img254.imageshack.us/img254/8305/200804280287bj4.th.jpg (http://img254.imageshack.us/my.php?image=200804280287bj4.jpg)
Taken with a macro lens (Nikkor AF 18-70mm).
http://img337.imageshack.us/img337/5008/200804280293dh8.th.jpg (http://img337.imageshack.us/my.php?image=200804280293dh8.jpg)
Taken with Tamron AF-S Tele-macro. Close-up on the leaves from ~3', full zoom.
This plant reminds me of 2D cacti; under my old lights, it was tan.

UID spp. #2:
http://img148.imageshack.us/img148/3523/200804280301jt4.th.jpg (http://img148.imageshack.us/my.php?image=200804280301jt4.jpg)
Telephoto. Note the feathery fronds. Reminiscent of palm trees; it's right under a K4, so it's hard to get a good shot. UID spp. #1 is starting to take over here.
http://img248.imageshack.us/img248/2813/200804280306sk7.th.jpg (http://img248.imageshack.us/my.php?image=200804280306sk7.jpg)
Similar picture, with a little better detail view on the fronds themselves. Still blurry. :(

UID spp. #3 (grape caulerpa?):
http://img152.imageshack.us/img152/917/200804280311qt8.th.jpg (http://img152.imageshack.us/my.php?image=200804280311qt8.jpg)
These are the "leaves." They grow on a runner root system analogous to terrestrial plants.
http://img293.imageshack.us/img293/9302/200804280327ai0.th.jpg (http://img293.imageshack.us/my.php?image=200804280327ai0.jpg)
Runners growing out from under the rocks.

[Chibils]

#1 is pliable and fleshy yet firm. The "leaves" are roughly the size of dimes, maybe a bit smaller. My rock is from Tonga (Pacific East Aquaculture - Tonga Nukku) and a bit of Fiji (also from Dr. Mac).

#2 is soft, very soft. The fronds are odd; some are short, others grow on "ropes" into the current. It grows quickly, pops up in patches, and subsides.

#3 is fleshy, and seems to grow about 4-6" per frond, very densely. It grows very quickly; it appeared about a month ago, and now has four runners growing densely. One is about 15", one about 4", one about 3".

[lulaface]

The first I've seen but can't remember the name of. The second is bryopsis. The third is the large variety of grape caulerpa. I have that one. I love it because it is fairly controllable as caulerpas go.

[lulaface]

found it. the first is a type of turbinaria. very cool. want to send me some?

[Chibils]

I like it, but I'd be glad to send you any trimmings if someone has a good guide to propagating it (or even just "cut here and ship it").

In other news, is bryopsis bad as long as it's not choking out corals? It gets a nice deep forest green with blue highlights under my lights and growth has been significantly slowed under the 12,000k spectrum. It's easy to remove and grows back, but not excessively.

[Logzor]

I believe that fist time is dictyota. Do a google search on this species.

If it is dictyota it can spread rather quickly...

[piercho]

#1 Could be Turbinaria. Turbinaria can have a similar form, and the dark spots are characteristic. Not Dictyota, IMO. Dictyota has a characteristic of Y-branch blades.
#2 Bryopsis. Identifying characteristics are filamented green algae with fern-like or comb-like blades. This can be a difficult algae to control.
#3 Caulerpa, maybe racemosa/peltata species, often called grape Caulerpa. This form of Caulerpa can be difficult to control.

[bluenassarius]

howard nailed it well. turbinaria is desirable. i can't say the same for the others..