On Jan 28, 5:27*pm, "Pszemol" wrote:
"Chris Mares" wrote in message

...

I recently purchased a used 65 gal reef tank.
I am planning to reuse it but it has been in storage for
almost a year in a "dirty" condition.
I wanted to know what is the best way to remove the old pink / purple
algae from the aquarium before setting it back up.
I am a little leery about doing too much scraping with a razor blade for
fear of scratching the glass.

Razor is fine if you soak the tank for a day or two in water with
some vinegear in it. You can also use the aquarium grade scaper
which is probably made from a softer steel to not scratch glass.
The more vinegear the better. Do it in a garage or open air to not
brethe in too much of the vinegear.

When the stuff is still dry (before you soak it in vinegear water)
you my want to try poke on the glass in the middle in hope the
algae will pop/peel off without scraping. You might want to
pry off as many loose pieces as possible before you soak it...

I did exactly like you say above to a tank last year. It worked fine
and is now up and running.