Treatments won't work. As soon as the treatment stops the algae comes
back.

Best thing you can do is reduce feeding levels, increase water changes
(I'd do 50% a week) or get yourself a Siamese flying fox fish.

See http://www.thefishwiki.com/Siamese_Flying_Fox

I've got 2 of these in a 55G tank and they really are a great beard
algae eater.
Peaceful and amusing to look at too.

Some may tell you to get ten Yamato or Amano shrimp - Caridina Japonica
for your 10G
http://www.thefishwiki.com/Caridina_japonica
They'll eat the algae eventually and will not bioload your tank very
much at all!

Your tetras will not be bothered by either of these animals.