Posted by Paul (in NY) [172.68.70.31] on Friday, November 22, 2019 at 09:50:52 :
In Reply to: NP420 and NP435 Questions posted by Andrew in MI [172.68.206.115] on Friday, November 22, 2019 at 09:40:52 :
This site may be of some help;
https://permarecycling.wordpress.com/2017/11/20/np420-vs-np435-and-other-permaculture-stuff/
Paul