In article . com,
"bettasngoldfish" wrote:

Hi Tom, The brown algae you are describing is harmless to your fish
although you may not like the way it looks. Please don't add any
chemicals to your water as they may be more harmful than good. A
decent water change and some elbow grease is all thats needed : )

Maria


Or a pair of Apple snails... ;-)
My snail keeps the Betta tank spotless!
--
K.

Sprout the MungBean to reply

"I don't like to commit myself about heaven and hell‹you
see, I have friends in both places." --Mark Twain