What I would like to know is this: I do about a 33% water change
once a week... would changing that much daily or every other day help get
rid of the green spot algae?

Probably not. Green spot algae is one of those algaes that appears even
well-balanced tanks. Comes with the brighter lighting. It may be less of a
problem once your plants are growing well, and once you have a few more
algae-eaters in the tank. (BTW, snails are great for keeping algae off
leaves.)

Question two is about a huge Amazon Sword I have had for quite a while.
Most of the leaves now have black spots and also some type of blackish
algae. I have clipped the worst leaves. Should I just go ahead and clip
all but the new leaves which look ok? There are about 4-5 1"-4" new leaves.
I hate to decimate this plant, but I think that's the best idea?

I'd remove the old leaves gradually, so as not to shock the plant.


Leigh

http://www.fortunecity.com/lavender/halloween/881/