Reducing Filter Flow For Betta

[Honeythorn]

i made one of these for my bio-wheel power filter and improvised to make it work for my particular filter:

[URL="http/www.petfish.net/articles/Do-It-Your...currentkill.php"]http/www.petfish.net/articles/Do-It-Your...currentkill.php[/URL]

That method doesn't work at all with a Fluval. I've tried it.