Mary ,
The first one is likely Grateloupia, though the photo is not enough to go beyond genus-level guessing. It is not an appropriate reeftank alga, in the sense that it is not found in abundant-coral contexts ---anyway thrives on very strong current, somewhat cooler temps and scuzzy water.
The second looks like Chaetomorpha, but I could be wrong. The closeup is taking forever to load. There is plenty of online comment on this alga.
The third is probably Botryocladia uvarioides, but then some of the diagnostics between species in this Genus are reproductive in nature.
After ten minutes, the rest of the pics have yet to load.
Sigh.
I will try to view the other (slooooooowwwwwwwly-loading) pics later today. Either my connection is crappy towards your website, or I don't know what...
hth,
Horge Cortes-Jorge Jr.