Without pics to confirm, yes, that is a decent website with tips on attacking BGA.
The thing about all nuisance algaes though is that getting rid of it isn't curing your tank. There is still something there promoting its growth.
My suggestion.
1) Manually remove all you can.
2) Back off on any lighting schedule you are doing. I would also examine if the tank gets alot of sunlight from a window as well.
3) Before adding fish, do the marycn anti-bacterial treatment. Normally, I would say no chemicals, but without a huge bioload, I think we will be okay. And treating a 10 gal tank is not a huge amount of drugs. Do the full treatment per the directions.
4) Before adding fish, get either a) a larger HOB filter, or better b) an additional sponge filter. Something like this:
http://www.thatpetplace.com/pet/prod/204192/product.web
Set it up in the corner opposite to where the HOB is. It is going to do a few things. It will improve the flow. It will add oxygen to the water. And it will increase the biofiltration that you will need with the additional fish you plan on adding.
As an aside, I would not add all those fish at once. Going from 1 oto to 16 fish will cause a spike in your nitrogen cycle. Do it slowly over time. Even though those fish aren't large and messy, you are going to be pushing the capacity on a 10 gal tank. The sponge filter will help.
