needle wheel modification

[Jeremy1]

I know there is a thread here on how to modify powerheads to make needle wheel, but I cannot find it. Can someone post how to do this please. Thanks,

 

[Biollante]

I'm not sure if this is the one you are looking for:

http://www.barrreport.com/articles/41-diy-internal-reactor-great-yeast-co2-users.html

Biollante

 

[Calmer]

I believe this is what you are looking for: http://www.barrreport.com/co2-aquat...diy-modifications.html?highlight=needle+wheel