"Michi Henning" wrote in message ...
"Scott" wrote in message
...

I have had blue green algae in my aquarium since I first set it up in
November last year. it started as a small patch on the gravel in the front
of my tank and very quickly spread over the plants and gravel forming into
sheets. I removed the sheets and gravel cleaned weekly but it did not stop
spreading and the algae was back in force every three days or so.

Go to a veterinary and get some erythromycin. This reliably kills BGA.
You can find detailed instructions for the treatment regime at
http://www.myfishtank.net/articles/bga.php, (It might be a good
idea to print out that sheet and take it with you to the vet, so he can
see what you want to do.) I've used these instructions in the past
myself with great success.

One additional tip: if you use erythromycin, don't tip it into the
tank directly, but put it into a small bottle of water first and
shake it up vigorously. If you don't do this, quite a bit of the
antibiotic just ends up sitting in lumps on the substrate.

Cheers,

Michi.

Why go to all that trouble and cost when you can blackout of the tank
for 3 days and cost you nothing and is 100% effective at killing it?

Not sure why people suggest drugs vs something that is FREE and
effective.

Do 50% water change, add 1/4 teaspoon of KNO3 per 20 gal.
Cover with trash bag towels etc so that no light gets in for 3 full
days.
Remove CO2, increase water movement.

Do 50% water change and add the KNO3 back and make sure you dose
enough KNO3 for the tank take care of the tank regularly from then on
with dosing and water changes.

You need to put this method in your web site and detail it out, not
antibiotics.
It's Free
It's faster
It addresses the long term problem, (poor plant growth)
It's simpler and not everyone has access to antibiotics.
It's 100% effective also.
It's been done many many times all over the world.

Regards,
Tom Barr